diff --git a/src/MainPage.js b/src/MainPage.js
index 98efb34..b55049c 100644
--- a/src/MainPage.js
+++ b/src/MainPage.js
@@ -49,7 +49,11 @@ const ClickHanlde = styled('div', { shouldForwardProp: (prop) => prop !== 'open'
 const Main = styled('main', { shouldForwardProp: (prop) => prop !== 'open' })(
     ({ theme, open }) => ({
         flex: 1,
-        padding: theme.spacing(3),
+        paddingTop: 0,
+        paddingLeft: theme.spacing(3),
+        paddingRight: theme.spacing(3),
+        paddingBottom: theme.spacing(3),
+        marginTop: 48,
         transition: theme.transitions.create('margin', {
             easing: theme.transitions.easing.sharp,
             duration: theme.transitions.duration.leavingScreen,
@@ -65,10 +69,10 @@ const Main = styled('main', { shouldForwardProp: (prop) => prop !== 'open' })(
     }),
 );
 
-const LyricItem = ({ empty, hasLyric, lyricsBrowserStyle, currentLyric, currentTime }) => {
+const LyricItem = ({ empty, hasLyric, currentLyric, currentTime }) => {
     if (empty) {
         return <div style={{
-            height: "calc(100vh - 250px)",
+            height: "calc(100vh - 298px)",
             marginTop: 48,
             display: "flex",
             alignItems: "center",
@@ -101,7 +105,7 @@ const RecordPlayer = ({ loading, empty, playerBarWidth, currentTime, hasLyric, c
     } else {
         return <div>
             <PlayerBar width={playerBarWidth} currentTime={currentTime} lyric={currentLyric} />
-            <LyricItem empty={empty} />
+            <LyricItem empty={empty} hasLyric={hasLyric} currentLyric={currentLyric} currentTime={currentTime} />
         </div>
     }
 };
diff --git a/src/PlayerBar.js b/src/PlayerBar.js
index 11492e6..8864be4 100644
--- a/src/PlayerBar.js
+++ b/src/PlayerBar.js
@@ -30,6 +30,7 @@ export default function ({ width, lyric, currentTime }) {
     useEffect(() => {
         player.current.url = currentBlob
         setPlaybackRate(1.0);   // 恢复默认
+        dispatch(setCurrentTime(0));
         console.log(player.current.url);
     }, [currentBlob]);
 
diff --git a/src/business/utilities.js b/src/business/utilities.js
index f202787..37f47f1 100644
--- a/src/business/utilities.js
+++ b/src/business/utilities.js
@@ -1,9 +1,19 @@
 // 间隔多长时间取一个采样点
 // duration 秒，有小数点
 const sampleInterval = (duration) => {
-    let interval = (duration > 20 * 60) ? 200 : 100;
+    let interval = 100;
     let isFirefox = window.navigator.userAgent.includes("Firefox");
-    if (isFirefox && (interval < 400)) interval = 400; // firefox canvas width 不能过长
+    if (isFirefox) {// firefox canvas width 不能过长
+        if (duration > 20 * 60) {
+            interval = 400;
+        } else if (duration > 10 * 60) {
+            interval = 200;
+        }
+    } else {
+        if (duration > 20 * 60) {
+            interval = 200;
+        }
+    }
     return interval;
 }
 
diff --git a/src/components/DynamicCodeForm.js b/src/components/DynamicCodeForm.js
index b09a01d..03aa3a6 100644
--- a/src/components/DynamicCodeForm.js
+++ b/src/components/DynamicCodeForm.js
@@ -28,6 +28,7 @@ export default function ({ udid, firstEnter, onChange, agreeAgreement, onAgreeCh
 
     const onClick = (event) => {
         event.preventDefault();
+        if (!validatePhoneNumber(account)) return;
         code.current.disabled = true;
         yzs.send_phone_code(udid, account)
         setSeconds(60);