diff --git a/Server/main.cpp b/Server/main.cpp
index 7cd649f..6f34c86 100644
--- a/Server/main.cpp
+++ b/Server/main.cpp
@@ -10,7 +10,7 @@
 #include "UdpServer.h"
 #include "WeChatContext/CorporationContext.h"
 #include "WeChatContext/WeChatContext.h"
-#include "WebApplication.h"
+#include "WebApplication/Application.h"
 #include <boost/program_options.hpp>
 #include <boost/property_tree/ini_parser.hpp>
 #include <boost/property_tree/ptree.hpp>
@@ -97,7 +97,7 @@ int main(int argc, char const *argv[]) {
 
         auto udpServer = std::make_shared<UdpServer>(application->ioContext());
         auto mediaServer = std::make_shared<MediaServer>(554, false);
-        auto webApp = Singleton<WebApplication>::instance<Construct>(application->getWtPort(), application->getDocumentRoot());
+        auto webApp = Singleton<WebToolkit::Server>::instance<Construct>(application->getWtPort(), application->getDocumentRoot());
 
         using namespace boost::asio::ip;
         auto proxyAddress = make_address(application->getServer());
diff --git a/WebApplication/Application.cpp b/WebApplication/Application.cpp
new file mode 100644
index 0000000..81d961f
--- /dev/null
+++ b/WebApplication/Application.cpp
@@ -0,0 +1,170 @@
+#include "Application.h"
+#include "BoostLog.h"
+#include "BulmaTheme.h"
+#include "Database/Session.h"
+#include "Dialog.h"
+#include "LoginPage.h"
+#include "Restful.h"
+#include "VisitorRecordsPage.h"
+#include <Wt/Auth/AuthService.h>
+#include <Wt/Auth/HashFunction.h>
+#include <Wt/Auth/Identity.h>
+#include <Wt/Auth/PasswordService.h>
+#include <Wt/Auth/PasswordStrengthValidator.h>
+#include <Wt/Auth/PasswordVerifier.h>
+#include <Wt/Dbo/FixedSqlConnectionPool.h>
+#include <Wt/Dbo/SqlConnectionPool.h>
+#include <Wt/Dbo/backend/Sqlite3.h>
+#include <Wt/WContainerWidget.h>
+#include <Wt/WEnvironment.h>
+#include <Wt/WLineEdit.h>
+#include <Wt/WPushButton.h>
+#include <Wt/WServer.h>
+#include <format>
+
+namespace WebToolkit {
+Application::Application(const Wt::WEnvironment &env, bool embedded) : Wt::WApplication(env) {
+    messageResourceBundle().use(appRoot() + "wt");
+    messageResourceBundle().use(appRoot() + "auth_strings");
+    messageResourceBundle().use(appRoot() + "auth_css_theme");
+    useStyleSheet("/resources/app.css");
+    LOG(info) << "app root: " << appRoot();
+    m_session = Database::session();
+    m_session->login().changed().connect(this, &Application::authEvent);
+    setTheme(std::make_shared<BulmaTheme>("bulma", !embedded));
+    if (!embedded) {
+        // setTheme(std::make_shared<Wt::WBootstrap2Theme>());
+        m_root = root();
+    } else {
+        std::unique_ptr<Wt::WContainerWidget> topPtr = std::make_unique<Wt::WContainerWidget>();
+        m_root = topPtr.get();
+        const std::string *div = env.getParameter("div");
+        if (div) {
+            setJavaScriptClass(*div);
+            bindWidget(std::move(topPtr), *div);
+        } else {
+            LOG(error) << "Missing: parameter: 'div'";
+        }
+        auto externalPath = env.getParameter("path");
+        if (externalPath != nullptr) {
+            m_externalPath = *externalPath;
+            LOG(info) << "external path: " << m_externalPath;
+        } else {
+            auto parameters = env.getParameterMap();
+            for (auto &p : parameters) {
+                LOG(info) << p.first;
+            }
+        }
+        LOG(info) << "url: " << url();
+        LOG(info) << "relative resources url: " << relativeResourcesUrl();
+        LOG(info) << "resources url: " << resourcesUrl();
+    }
+
+    if (!embedded) {
+        root()->addWidget(std::make_unique<Wt::WText>(
+            "Note: you can also run this application from within <a href=\"hello.html\">a web page</a>."));
+    }
+    LOG(info) << "internal path: " << internalPath();
+
+    m_root->addWidget(std::make_unique<Wt::WText>("Your name, please ? "));
+    m_nameEdit = m_root->addWidget(std::make_unique<Wt::WLineEdit>());
+    m_nameEdit->setFocus();
+
+    auto b = m_root->addWidget(std::make_unique<Wt::WPushButton>("点击我!"));
+    b->setMargin(5, Wt::Side::Left);
+
+    m_root->addWidget(std::make_unique<Wt::WBreak>());
+
+    m_greeting = m_root->addWidget(std::make_unique<Wt::WText>());
+
+    b->clicked().connect(this, &Application::greet);
+    m_nameEdit->enterPressed().connect(this, &Application::greet);
+
+    auto app = Amass::Singleton<Server>::instance();
+
+    m_root->addWidget(std::make_unique<Dialog>());
+    internalPathChanged().connect(this, &Application::handlePathChange);
+    handlePathChange(m_externalPath.empty() ? internalPath() : m_externalPath);
+}
+
+Application::~Application() {
+}
+
+void Application::greet() {
+    m_greeting->setText("Hello there, " + m_nameEdit->text());
+    setInternalPath(m_externalPath);
+}
+
+void Application::authEvent() {
+    if (m_session->login().loggedIn()) {
+        const Wt::Auth::User &u = m_session->login().user();
+        LOG(info) << "User " << u.id() << " (" << u.identity(Wt::Auth::Identity::LoginName) << ")"
+                  << " logged in.";
+    } else {
+        LOG(info) << "User logged out.";
+    }
+}
+
+void Application::handlePathChange(const std::string &path) {
+    LOG(info) << "handlePathChange: " << path;
+    if (path.starts_with("/wt/login") || path.starts_with("/wt/register")) {
+        m_root->clear();
+        m_root->setStyleClass("WtCenterContainer");
+        m_root->addNew<LoginPage>(m_session->users(), m_session->login());
+    } else if (path.starts_with("/wt/visitor/analysis")) {
+        m_root->clear();
+        m_root->addNew<VisitorRecordsPage>(*m_session);
+    }
+}
+
+Server::Server(uint16_t port, const std::string &documentRoot) {
+    try {
+        std::vector<std::string> args;
+        args.push_back(std::format("--docroot={};/resources", documentRoot));
+        args.push_back(std::format("--approot={}/resources", documentRoot));
+        args.push_back(std::format("--http-listen=127.0.0.1:{}", port));
+        initializeAuthenticationService();
+
+        m_server = std::make_unique<Wt::WServer>(std::format("{}/resources", documentRoot), args);
+
+        m_server->addEntryPoint(Wt::EntryPointType::Application,
+                                std::bind(&Server::createApplication, this, std::placeholders::_1, false));
+        m_server->addEntryPoint(Wt::EntryPointType::WidgetSet,
+                                std::bind(&Server::createApplication, this, std::placeholders::_1, true), "/wt/app.js");
+        m_server->addResource(std::make_shared<AuthenticationResource>(), "/auth");
+        m_server->addResource(std::make_shared<PlaintextResource>(), "/plaintext");
+        m_server->addResource(std::make_shared<DbResource>(std::format("{}/database.sqlite", documentRoot)), "/db");
+
+        m_server->start();
+    } catch (const std::exception &e) {
+        LOG(error) << e.what();
+    }
+}
+
+std::unique_ptr<Wt::WApplication> Server::createApplication(const Wt::WEnvironment &env, bool embedded) {
+    return std::make_unique<Application>(env, embedded);
+}
+
+Server::~Server() {
+}
+
+void Server::initializeAuthenticationService() {
+    m_authService = std::make_unique<Wt::Auth::AuthService>();
+    m_authService->setAuthTokensEnabled(true, "logincookie");
+    m_passwordService = std::make_unique<Wt::Auth::PasswordService>(*m_authService);
+
+    auto verifier = std::make_unique<Wt::Auth::PasswordVerifier>();
+    verifier->addHashFunction(std::make_unique<Wt::Auth::BCryptHashFunction>(7));
+    m_passwordService->setVerifier(std::move(verifier));
+    m_passwordService->setPasswordThrottle(std::make_unique<Wt::Auth::AuthThrottle>());
+    m_passwordService->setStrengthValidator(std::make_unique<Wt::Auth::PasswordStrengthValidator>());
+}
+
+const Wt::Auth::AuthService &Server::authService() {
+    return *m_authService;
+}
+
+const Wt::Auth::PasswordService &Server::passwordService() {
+    return *m_passwordService;
+}
+} // namespace WebToolkit
\ No newline at end of file
diff --git a/WebApplication/WebApplication.h b/WebApplication/Application.h
similarity index 52%
rename from WebApplication/WebApplication.h
rename to WebApplication/Application.h
index 19f0c9c..fb312b3 100644
--- a/WebApplication/WebApplication.h
+++ b/WebApplication/Application.h
@@ -2,6 +2,7 @@
 #define __WEBAPPLICATION_H__
 
 #include "Singleton.h"
+#include <Wt/WApplication.h>
 #include <memory>
 
 namespace Wt {
@@ -16,18 +17,41 @@ class PasswordService;
 
 }; // namespace Wt
 
-class WebApplication {
-    friend class Amass::Singleton<WebApplication>;
+class Session;
+
+namespace WebToolkit {
+
+class Application : public Wt::WApplication {
+public:
+    Application(const Wt::WEnvironment &env, bool embedded);
+    ~Application();
+
+protected:
+    void greet();
+    void authEvent();
+    void handlePathChange(const std::string &path);
+
+private:
+    Wt::WLineEdit *m_nameEdit = nullptr;
+    Wt::WText *m_greeting = nullptr;
+    std::unique_ptr<Session> m_session;
+    std::string m_externalPath;
+
+    Wt::WContainerWidget *m_root = nullptr;
+};
+
+class Server {
+    friend class Amass::Singleton<Server>;
 
 public:
-    ~WebApplication();
+    ~Server();
 
     void initializeAuthenticationService();
     const Wt::Auth::AuthService &authService();
     const Wt::Auth::PasswordService &passwordService();
 
 protected:
-    WebApplication(uint16_t port, const std::string &documentRoot);
+    Server(uint16_t port, const std::string &documentRoot);
     std::unique_ptr<Wt::WApplication> createApplication(const Wt::WEnvironment &env, bool embedded);
 
 private:
@@ -36,5 +60,5 @@ private:
     std::unique_ptr<Wt::Auth::AuthService> m_authService;
     std::unique_ptr<Wt::Auth::PasswordService> m_passwordService;
 };
-
+} // namespace WebToolkit
 #endif // __WEBAPPLICATION_H__
\ No newline at end of file
diff --git a/WebApplication/BulmaTheme.cpp b/WebApplication/BulmaTheme.cpp
new file mode 100644
index 0000000..4c26411
--- /dev/null
+++ b/WebApplication/BulmaTheme.cpp
@@ -0,0 +1,257 @@
+#include "BulmaTheme.h"
+#include "BoostLog.h"
+#include <Wt/DomElement.h>
+#include <Wt/WDialog.h>
+#include <Wt/WLinkedCssStyleSheet.h>
+#include <Wt/WPopupWidget.h>
+#include <Wt/WPushButton.h>
+#include <format>
+
+namespace std {
+std::ostream &operator<<(std::ostream &os, Wt::DomElementType type);
+}
+
+std::string BulmaTheme::disabledClass() const {
+    return "";
+}
+
+std::string BulmaTheme::activeClass() const {
+    return "";
+}
+
+std::string BulmaTheme::utilityCssClass(int utilityCssClassRole) const {
+    return "";
+}
+
+std::vector<Wt::WLinkedCssStyleSheet> BulmaTheme::styleSheets() const {
+    std::vector<Wt::WLinkedCssStyleSheet> result;
+    std::string themeDir = resourcesUrl();
+    if (m_global) {
+        result.push_back(Wt::WLinkedCssStyleSheet(Wt::WLink(std::format("{}base.css", themeDir))));
+    }
+    result.push_back(Wt::WLinkedCssStyleSheet(Wt::WLink(std::format("{}prefixed.css", themeDir))));
+    return result;
+}
+
+bool BulmaTheme::canStyleAnchorAsButton() const {
+    return true;
+}
+
+void BulmaTheme::apply(Wt::WWidget *widget, Wt::WWidget *child, int widgetRole) const {
+}
+
+void BulmaTheme::apply(Wt::WWidget *widget, Wt::DomElement &element, int elementRole) const {
+    bool creating = element.mode() == Wt::DomElement::Mode::Create;
+    if (!widget->isThemeStyleEnabled()) return;
+    {
+        Wt::WPopupWidget *popup = dynamic_cast<Wt::WPopupWidget *>(widget);
+        if (popup) element.addPropertyWord(Wt::Property::Class, "Wt-outset");
+    }
+    switch (element.type()) {
+    case Wt::DomElementType::BUTTON: {
+        if (creating) {
+            element.addPropertyWord(Wt::Property::Class, "bulma-button");
+        }
+        break;
+    }
+    case Wt::DomElementType::DIV: {
+        Wt::WDialog *dialog = dynamic_cast<Wt::WDialog *>(widget);
+        if (dialog) {
+            element.addPropertyWord(Wt::Property::Class, "modal-content");
+            return;
+        }
+        break;
+    }
+    default:
+        LOG(warning) << "elemnet[" << element.type() << "] need style.";
+        break;
+    }
+
+    LOG(info) << "BulmaTheme::apply";
+}
+
+void BulmaTheme::applyValidationStyle(Wt::WWidget *widget, const Wt::WValidator::Result &validation,
+                                      Wt::WFlags<Wt::ValidationStyleFlag> flags) const {
+}
+
+bool BulmaTheme::canBorderBoxElement(const Wt::DomElement &element) const {
+    return true;
+}
+
+std::string BulmaTheme::name() const {
+    return m_name;
+}
+
+BulmaTheme::BulmaTheme(const std::string &name, bool global) : m_name(name), m_global(global) {
+}
+
+namespace std {
+std::ostream &operator<<(std::ostream &os, Wt::DomElementType type) {
+    using namespace Wt;
+    switch (type) {
+    case DomElementType::A:
+        os << "A";
+        break;
+    case DomElementType::BR:
+        os << "BR";
+        break;
+    case DomElementType::BUTTON:
+        os << "BUTTON";
+        break;
+    case DomElementType::COL:
+        os << "COL";
+        break;
+    case DomElementType::COLGROUP:
+        os << "COLGROUP";
+        break;
+    case DomElementType::DIV:
+        os << "DIV";
+        break;
+    case DomElementType::FIELDSET:
+        os << "FIELDSET";
+        break;
+    case DomElementType::FORM:
+        os << "FORM";
+        break;
+    case DomElementType::H1:
+        os << "H1";
+        break;
+    case DomElementType::H2:
+        os << "H2";
+        break;
+    case DomElementType::H3:
+        os << "H3";
+        break;
+    case DomElementType::H4:
+        os << "H4";
+        break;
+    case DomElementType::H5:
+        os << "H5";
+        break;
+    case DomElementType::H6:
+        os << "H6";
+        break;
+    case DomElementType::IFRAME:
+        os << "IFRAME";
+        break;
+    case DomElementType::IMG:
+        os << "IMG";
+        break;
+    case DomElementType::INPUT:
+        os << "INPUT";
+        break;
+    case DomElementType::LABEL:
+        os << "LABEL";
+        break;
+    case DomElementType::LEGEND:
+        os << "LEGEND";
+        break;
+    case DomElementType::LI:
+        os << "LI";
+        break;
+    case DomElementType::OL:
+        os << "OL";
+        break;
+    case DomElementType::OPTION:
+        os << "OPTION";
+        break;
+    case DomElementType::UL:
+        os << "UL";
+        break;
+    case DomElementType::SCRIPT:
+        os << "SCRIPT";
+        break;
+    case DomElementType::SELECT:
+        os << "SELECT";
+        break;
+    case DomElementType::SPAN:
+        os << "SPAN";
+        break;
+    case DomElementType::TABLE:
+        os << "TABLE";
+        break;
+    case DomElementType::TBODY:
+        os << "TBODY";
+        break;
+    case DomElementType::THEAD:
+        os << "THEAD";
+        break;
+    case DomElementType::TFOOT:
+        os << "TFOOT";
+        break;
+    case DomElementType::TH:
+        os << "TH";
+        break;
+    case DomElementType::TD:
+        os << "TD";
+        break;
+    case DomElementType::TEXTAREA:
+        os << "TEXTAREA";
+        break;
+    case DomElementType::OPTGROUP:
+        os << "OPTGROUP";
+        break;
+    case DomElementType::TR:
+        os << "TR";
+        break;
+    case DomElementType::P:
+        os << "P";
+        break;
+    case DomElementType::CANVAS:
+        os << "CANVAS";
+        break;
+    case DomElementType::MAP:
+        os << "MAP";
+        break;
+    case DomElementType::AREA:
+        os << "AREA";
+        break;
+    case DomElementType::STYLE:
+        os << "STYLE";
+        break;
+    case DomElementType::OBJECT:
+        os << "OBJECT";
+        break;
+    case DomElementType::PARAM:
+        os << "PARAM";
+        break;
+    case DomElementType::AUDIO:
+        os << "AUDIO";
+        break;
+    case DomElementType::VIDEO:
+        os << "VIDEO";
+        break;
+    case DomElementType::SOURCE:
+        os << "SOURCE";
+        break;
+    case DomElementType::B:
+        os << "B";
+        break;
+    case DomElementType::STRONG:
+        os << "STRONG";
+        break;
+    case DomElementType::EM:
+        os << "EM";
+        break;
+    case DomElementType::I:
+        os << "I";
+        break;
+    case DomElementType::HR:
+        os << "HR";
+        break;
+    case DomElementType::DATALIST:
+        os << "DATALIST";
+        break;
+    case DomElementType::UNKNOWN:
+        os << "UNKNOWN";
+        break;
+    case DomElementType::OTHER:
+        os << "OTHER";
+        break;
+    default:
+        os << "UNKNOWN";
+        break;
+    }
+    return os;
+}
+} // namespace std
\ No newline at end of file
diff --git a/WebApplication/BulmaTheme.h b/WebApplication/BulmaTheme.h
new file mode 100644
index 0000000..6cf1ebc
--- /dev/null
+++ b/WebApplication/BulmaTheme.h
@@ -0,0 +1,32 @@
+#ifndef __BULMATHEME_H__
+#define __BULMATHEME_H__
+
+#include <Wt/WTheme.h>
+
+/**
+ * @brief
+ *  Animate.css
+ *  https://bulma.io/
+ */
+class BulmaTheme : public Wt::WTheme {
+public:
+    BulmaTheme(const std::string &name, bool global = true);
+    std::string name() const final;
+    std::string disabledClass() const final;
+    std::string activeClass() const final;
+    std::string utilityCssClass(int utilityCssClassRole) const final;
+    std::vector<Wt::WLinkedCssStyleSheet> styleSheets() const final;
+    bool canStyleAnchorAsButton() const final;
+    void apply(Wt::WWidget *widget, Wt::WWidget *child, int widgetRole) const final;
+    void apply(Wt::WWidget *widget, Wt::DomElement &element, int elementRole) const final;
+
+    void applyValidationStyle(Wt::WWidget *widget, const Wt::WValidator::Result &validation,
+                              Wt::WFlags<Wt::ValidationStyleFlag> flags) const final;
+    bool canBorderBoxElement(const Wt::DomElement &element) const final;
+
+private:
+    std::string m_name;
+    bool m_global = true;
+};
+
+#endif // __BULMATHEME_H__
\ No newline at end of file
diff --git a/WebApplication/CMakeLists.txt b/WebApplication/CMakeLists.txt
index 24d216b..86ceb49 100644
--- a/WebApplication/CMakeLists.txt
+++ b/WebApplication/CMakeLists.txt
@@ -1,17 +1,19 @@
 find_package(Wt REQUIRED Wt)
 
 add_library(WebApplication
-    WebApplication.h WebApplication.cpp
+    Application.h Application.cpp
     LoginPage.h LoginPage.cpp
+    BulmaTheme.h BulmaTheme.cpp
     VisitorRecordsPage.h VisitorRecordsPage.cpp
     VisitorRecordTableModel.h VisitorRecordTableModel.cpp
-    Hello.h Hello.cpp
     Restful.h Restful.cpp
     Dialog.h Dialog.cpp
 )
 
+get_filename_component(PARENT_DIR ${CMAKE_CURRENT_SOURCE_DIR} DIRECTORY)
+
 target_include_directories(WebApplication
-    PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}
+    INTERFACE ${PARENT_DIR}
 )
 
 target_link_libraries(WebApplication
diff --git a/WebApplication/Hello.cpp b/WebApplication/Hello.cpp
deleted file mode 100644
index 6cb1ee0..0000000
--- a/WebApplication/Hello.cpp
+++ /dev/null
@@ -1,108 +0,0 @@
-#include "Hello.h"
-#include "BoostLog.h"
-#include "Database/Session.h"
-#include "Dialog.h"
-#include "LoginPage.h"
-#include "VisitorRecordsPage.h"
-#include "WebApplication.h"
-#include <Wt/Auth/Identity.h>
-#include <Wt/WBootstrap2Theme.h>
-#include <Wt/WContainerWidget.h>
-#include <Wt/WEnvironment.h>
-#include <Wt/WLineEdit.h>
-#include <Wt/WPushButton.h>
-#include <Wt/WText.h>
-
-Hello::Hello(const Wt::WEnvironment &env, bool embedded) : Wt::WApplication(env) {
-    messageResourceBundle().use(appRoot() + "wt");
-    messageResourceBundle().use(appRoot() + "auth_strings");
-    messageResourceBundle().use(appRoot() + "auth_css_theme");
-    useStyleSheet("/resources/app.css");
-    LOG(info) << "app root: " << appRoot();
-    m_session = Database::session();
-    m_session->login().changed().connect(this, &Hello::authEvent);
-    setTitle("Hello world");
-    if (!embedded) {
-        setTheme(std::make_shared<Wt::WBootstrap2Theme>());
-        m_root = root();
-    } else {
-        std::unique_ptr<Wt::WContainerWidget> topPtr = std::make_unique<Wt::WContainerWidget>();
-        m_root = topPtr.get();
-        const std::string *div = env.getParameter("div");
-        if (div) {
-            setJavaScriptClass(*div);
-            bindWidget(std::move(topPtr), *div);
-        } else {
-            LOG(error) << "Missing: parameter: 'div'";
-        }
-        auto externalPath = env.getParameter("path");
-        if (externalPath != nullptr) {
-            m_externalPath = *externalPath;
-            LOG(info) << "external path: " << m_externalPath;
-        } else {
-            auto parameters = env.getParameterMap();
-            for (auto &p : parameters) {
-                LOG(info) << p.first;
-            }
-        }
-        LOG(info) << "url: " << url();
-        LOG(info) << "relative resources url: " << relativeResourcesUrl();
-        LOG(info) << "resources url: " << resourcesUrl();
-    }
-
-    if (!embedded) {
-        root()->addWidget(std::make_unique<Wt::WText>("<p><emph>Note: you can also run this application "
-                                                      "from within <a href=\"hello.html\">a web page</a>.</emph></p>"));
-    }
-    LOG(info) << "internal path: " << internalPath();
-
-    m_root->addWidget(std::make_unique<Wt::WText>("Your name, please ? "));
-    m_nameEdit = m_root->addWidget(std::make_unique<Wt::WLineEdit>());
-    m_nameEdit->setFocus();
-
-    auto b = m_root->addWidget(std::make_unique<Wt::WPushButton>("点击我!"));
-    b->setMargin(5, Wt::Side::Left);
-
-    m_root->addWidget(std::make_unique<Wt::WBreak>());
-
-    m_greeting = m_root->addWidget(std::make_unique<Wt::WText>());
-
-    b->clicked().connect(this, &Hello::greet);
-    m_nameEdit->enterPressed().connect(this, &Hello::greet);
-
-    auto app = Amass::Singleton<WebApplication>::instance();
-
-    m_root->addWidget(std::make_unique<Dialog>());
-    internalPathChanged().connect(this, &Hello::handlePathChange);
-    handlePathChange(m_externalPath.empty() ? internalPath() : m_externalPath);
-}
-
-Hello::~Hello() {
-}
-
-void Hello::greet() {
-    m_greeting->setText("Hello there, " + m_nameEdit->text());
-    setInternalPath(m_externalPath);
-}
-
-void Hello::authEvent() {
-    if (m_session->login().loggedIn()) {
-        const Wt::Auth::User &u = m_session->login().user();
-        LOG(info) << "User " << u.id() << " (" << u.identity(Wt::Auth::Identity::LoginName) << ")"
-                  << " logged in.";
-    } else {
-        LOG(info) << "User logged out.";
-    }
-}
-
-void Hello::handlePathChange(const std::string &path) {
-    LOG(info) << "handlePathChange: " << path;
-    if (path.starts_with("/wt/login") || path.starts_with("/wt/register")) {
-        m_root->clear();
-        m_root->setStyleClass("WtCenterContainer");
-        m_root->addNew<LoginWidget>(m_session->users(), m_session->login());
-    } else if (path.starts_with("/wt/visitor/analysis")) {
-        m_root->clear();
-        m_root->addNew<VisitorRecordsPage>(*m_session);
-    }
-}
diff --git a/WebApplication/Hello.h b/WebApplication/Hello.h
deleted file mode 100644
index 2a703eb..0000000
--- a/WebApplication/Hello.h
+++ /dev/null
@@ -1,27 +0,0 @@
-#ifndef __HELLO_H__
-#define __HELLO_H__
-
-#include <Wt/WApplication.h>
-
-class Session;
-
-class Hello : public Wt::WApplication {
-public:
-    Hello(const Wt::WEnvironment &env, bool embedded);
-    ~Hello();
-
-protected:
-    void greet();
-    void authEvent();
-    void handlePathChange(const std::string &path);
-
-private:
-    Wt::WLineEdit *m_nameEdit = nullptr;
-    Wt::WText *m_greeting = nullptr;
-    std::unique_ptr<Session> m_session;
-    std::string m_externalPath;
-
-    Wt::WContainerWidget *m_root = nullptr;
-};
-
-#endif // __HELLO_H__
\ No newline at end of file
diff --git a/WebApplication/LoginPage.cpp b/WebApplication/LoginPage.cpp
index 36ca9b2..927a979 100644
--- a/WebApplication/LoginPage.cpp
+++ b/WebApplication/LoginPage.cpp
@@ -1,12 +1,12 @@
 #include "LoginPage.h"
-#include "WebApplication.h"
+#include "Application.h"
 #include <Wt/Auth/AuthService.h>
 #include <Wt/Auth/AuthWidget.h>
 #include <Wt/Auth/PasswordService.h>
 #include <Wt/WVBoxLayout.h>
 
-LoginWidget::LoginWidget(Wt::Auth::AbstractUserDatabase &users, Wt::Auth::Login &login) {
-    auto app = Amass::Singleton<WebApplication>::instance();
+LoginPage::LoginPage(Wt::Auth::AbstractUserDatabase &users, Wt::Auth::Login &login) {
+    auto app = Amass::Singleton<WebToolkit::Server>::instance();
     auto authWidget = std::make_unique<Wt::Auth::AuthWidget>(app->authService(), users, login);
     authWidget->setInternalBasePath("/wt");
     authWidget->model()->addPasswordAuth(&app->passwordService());
@@ -14,6 +14,4 @@ LoginWidget::LoginWidget(Wt::Auth::AbstractUserDatabase &users, Wt::Auth::Login
     authWidget->processEnvironment();
     // setAttributeValue("style", "transform: translateY(-100px);");
     addWidget(std::move(authWidget));
-
-    authWidget-> resolve<WInteractWidget *>("login")->addStyleClass("button--primary");
 }
diff --git a/WebApplication/LoginPage.h b/WebApplication/LoginPage.h
index 60e4407..4a68680 100644
--- a/WebApplication/LoginPage.h
+++ b/WebApplication/LoginPage.h
@@ -3,9 +3,9 @@
 
 #include <Wt/WContainerWidget.h>
 
-class LoginWidget : public Wt::WContainerWidget {
+class LoginPage : public Wt::WContainerWidget {
 public:
-    LoginWidget(Wt::Auth::AbstractUserDatabase &users, Wt::Auth::Login &login);
+    LoginPage(Wt::Auth::AbstractUserDatabase &users, Wt::Auth::Login &login);
 };
 
 #endif // __LOGINWIDGET_H__
\ No newline at end of file
diff --git a/WebApplication/VisitorRecordTableModel.cpp b/WebApplication/VisitorRecordTableModel.cpp
index 2524cfa..b5b79f0 100644
--- a/WebApplication/VisitorRecordTableModel.cpp
+++ b/WebApplication/VisitorRecordTableModel.cpp
@@ -75,11 +75,11 @@ bool VisitorRecordTableModel::setHeaderData(int section, Wt::Orientation orienta
 void VisitorRecordTableModel::sort(int column, Wt::SortOrder order) {
     if (column == 2) {
         layoutAboutToBeChanged().emit();
-        std::sort(m_records.begin(), m_records.end(), [order](const VisitorRecord &lfh, const VisitorRecord &rfh) {
+        std::sort(m_records.begin(), m_records.end(), [order](const Item &lfh, const Item &rfh) {
             if (order == Wt::SortOrder::Ascending) {
-                return lfh.time < rfh.time;
+                return std::get<0>(lfh).time < std::get<0>(rfh).time;
             } else {
-                return lfh.time > rfh.time;
+                return std::get<0>(lfh).time > std::get<0>(rfh).time;
             }
         });
         layoutChanged().emit();
@@ -144,27 +144,45 @@ bool VisitorRecordTableModel::setData(const Wt::WModelIndex &index, const Wt::cp
     }
 }
 
-std::vector<VisitorRecord> VisitorRecordTableModel::selected() const {
-    std::vector<VisitorRecord> ret;
+Wt::WModelIndexSet VisitorRecordTableModel::selectedIndexes() const {
+    Wt::WModelIndexSet ret;
     for (int i = 0; i < m_records.size(); i++) {
         if (std::get<1>(m_records.at(i))) {
-            ret.push_back(std::get<0>(m_records.at(i)));
+            ret.insert(index(i, 0));
         }
     }
     return ret;
 }
 
-void VisitorRecordTableModel::removeSelected() {
+bool VisitorRecordTableModel::removeSelectedRows(const Wt::WModelIndexSet &indexes) {
     Wt::Dbo::Transaction transaction(m_session);
-    for (auto iterator = m_records.cbegin(); iterator != m_records.cend();) {
-        auto selected = std::get<1>(*iterator);
-        auto &r = std::get<0>(*iterator);
-        if (selected) {
-            Wt::Dbo::ptr<VisitorRecord> item = m_session.find<VisitorRecord>().where("id = ?").bind(r.id);
-            item.remove();
-            iterator = m_records.erase(iterator);
-        } else {
-            ++iterator;
-        }
+    layoutAboutToBeChanged().emit();
+    std::vector<int> ids;
+    for (auto &index : indexes) {
+        auto &r = std::get<0>(m_records.at(index.row()));
+        ids.push_back(r.id);
+        Wt::Dbo::ptr<VisitorRecord> item = m_session.find<VisitorRecord>().where("id = ?").bind(r.id);
+        item.remove();
     }
-}
\ No newline at end of file
+    for (auto id : ids) {
+        std::erase_if(m_records, [id](const Item &item) { return std::get<0>(item).id == id; });
+    }
+    layoutChanged().emit();
+    return true;
+}
+
+bool VisitorRecordTableModel::removeRows(int row, int count, const Wt::WModelIndex &parent) {
+    if ((row + count) > m_records.size()) {
+        return false;
+    }
+    Wt::Dbo::Transaction transaction(m_session);
+    beginRemoveRows(parent, row, row + count - 1);
+    for (int i = row; i < (row + count); ++i) {
+        auto &r = std::get<0>(m_records.at(i));
+        Wt::Dbo::ptr<VisitorRecord> item = m_session.find<VisitorRecord>().where("id = ?").bind(r.id);
+        item.remove();
+    }
+    m_records.erase(m_records.cbegin() + row, m_records.cbegin() + row + count);
+    endRemoveRows();
+    return true;
+}
diff --git a/WebApplication/VisitorRecordTableModel.h b/WebApplication/VisitorRecordTableModel.h
index b9acf9a..348b0c5 100644
--- a/WebApplication/VisitorRecordTableModel.h
+++ b/WebApplication/VisitorRecordTableModel.h
@@ -20,9 +20,10 @@ public:
     bool setHeaderData(int section, Wt::Orientation orientation, const Wt::cpp17::any &value,
                        Wt::ItemDataRole role = Wt::ItemDataRole::Edit) final;
     void sort(int column, Wt::SortOrder order = Wt::SortOrder::Ascending) final;
+    Wt::WModelIndexSet selectedIndexes() const;
 
-    std::vector<VisitorRecord> selected() const;
-    void removeSelected();
+    bool removeRows(int row, int count, const Wt::WModelIndex &parent = Wt::WModelIndex()) final;
+    bool removeSelectedRows(const Wt::WModelIndexSet &indexes);
 
 private:
     Session &m_session;
diff --git a/WebApplication/VisitorRecordsPage.cpp b/WebApplication/VisitorRecordsPage.cpp
index aa472d6..a8fe62c 100644
--- a/WebApplication/VisitorRecordsPage.cpp
+++ b/WebApplication/VisitorRecordsPage.cpp
@@ -50,13 +50,15 @@ VisitorRecordsPage::VisitorRecordsPage(Session &session) : m_model{std::make_sha
 }
 
 void VisitorRecordsPage::onDeleteButtonClicked() {
-    auto selected = m_model->selected();
+    auto selected = m_model->selectedIndexes();
     if (selected.empty()) {
         Wt::WMessageBox::show("删除记录", "请先选择要删除的记录", Wt::StandardButton::Ok);
     } else {
         auto anwser =
             Wt::WMessageBox::show("删除记录", "确定删除选择的记录?", Wt::StandardButton::Ok | Wt::StandardButton::Cancel);
         if (anwser == Wt::StandardButton::Ok) {
+            LOG(info) << "remove row: " << selected.size();
+            m_model->removeSelectedRows(selected);
         }
     }
 }
\ No newline at end of file
diff --git a/WebApplication/WebApplication.cpp b/WebApplication/WebApplication.cpp
deleted file mode 100644
index ba99a85..0000000
--- a/WebApplication/WebApplication.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-#include "WebApplication.h"
-#include "BoostLog.h"
-#include "Database/Session.h"
-#include "Hello.h"
-#include "Restful.h"
-#include <Wt/Auth/AuthService.h>
-#include <Wt/Auth/HashFunction.h>
-#include <Wt/Auth/PasswordService.h>
-#include <Wt/Auth/PasswordStrengthValidator.h>
-#include <Wt/Auth/PasswordVerifier.h>
-#include <Wt/Dbo/FixedSqlConnectionPool.h>
-#include <Wt/Dbo/SqlConnectionPool.h>
-#include <Wt/Dbo/backend/Sqlite3.h>
-#include <Wt/WServer.h>
-#include <format>
-
-WebApplication::WebApplication(uint16_t port, const std::string &documentRoot) {
-    try {
-        std::vector<std::string> args;
-        args.push_back(std::format("--docroot={};/resources", documentRoot));
-        args.push_back(std::format("--approot={}/resources", documentRoot));
-        args.push_back(std::format("--http-listen=127.0.0.1:{}", port));
-        initializeAuthenticationService();
-
-        m_server = std::make_unique<Wt::WServer>(std::format("{}/resources", documentRoot), args);
-
-        m_server->addEntryPoint(Wt::EntryPointType::Application,
-                                std::bind(&WebApplication::createApplication, this, std::placeholders::_1, false));
-        m_server->addEntryPoint(Wt::EntryPointType::WidgetSet,
-                                std::bind(&WebApplication::createApplication, this, std::placeholders::_1, true), "/wt/app.js");
-        m_server->addResource(std::make_shared<AuthenticationResource>(), "/auth");
-        m_server->addResource(std::make_shared<PlaintextResource>(), "/plaintext");
-        m_server->addResource(std::make_shared<DbResource>(std::format("{}/database.sqlite", documentRoot)), "/db");
-
-        m_server->start();
-    } catch (const std::exception &e) {
-        LOG(error) << e.what();
-    }
-}
-
-std::unique_ptr<Wt::WApplication> WebApplication::createApplication(const Wt::WEnvironment &env, bool embedded) {
-    return std::make_unique<Hello>(env, embedded);
-}
-
-WebApplication::~WebApplication() {
-}
-
-void WebApplication::initializeAuthenticationService() {
-    m_authService = std::make_unique<Wt::Auth::AuthService>();
-    m_authService->setAuthTokensEnabled(true, "logincookie");
-    m_passwordService = std::make_unique<Wt::Auth::PasswordService>(*m_authService);
-
-    auto verifier = std::make_unique<Wt::Auth::PasswordVerifier>();
-    verifier->addHashFunction(std::make_unique<Wt::Auth::BCryptHashFunction>(7));
-    m_passwordService->setVerifier(std::move(verifier));
-    m_passwordService->setPasswordThrottle(std::make_unique<Wt::Auth::AuthThrottle>());
-    m_passwordService->setStrengthValidator(std::make_unique<Wt::Auth::PasswordStrengthValidator>());
-}
-
-const Wt::Auth::AuthService &WebApplication::authService() {
-    return *m_authService;
-}
-
-const Wt::Auth::PasswordService &WebApplication::passwordService() {
-    return *m_passwordService;
-}
diff --git a/resources/build.sh b/resources/build.sh
index 1a5bb67..8bb3e0f 100755
--- a/resources/build.sh
+++ b/resources/build.sh
@@ -25,7 +25,7 @@ function build() {
     # reset
     # pkill -9 HttpServer
     # cp -r /opt/Libraries/wt-4.11.1/share/Wt/* ./build
-    # cp resources/* build/resources/
+    # cp -r resources/* build/resources/
 
     if [ ! -f "${build_path}/CMakeCache.txt" ]; then
         cmake_scan