diff --git a/static/css/myEdit.css b/static/css/myEdit.css
index 36a593b..b0cfe3f 100644
--- a/static/css/myEdit.css
+++ b/static/css/myEdit.css
@@ -167,7 +167,7 @@ main {
     margin: 0 80rem;
 }
 
-@media screen and ( max-width: 768px ) {
+@media screen and ( max-width: 1024px ) {
     /*当屏幕尺寸小于768px时，应用下面的css样式*/
     .fixStylePosition {
         display: block;
diff --git a/static/js/lib/common/MyUtils.js b/static/js/lib/common/MyUtils.js
index 0c93248..b735676 100644
--- a/static/js/lib/common/MyUtils.js
+++ b/static/js/lib/common/MyUtils.js
@@ -287,7 +287,7 @@ export class MyUtils {
      */
     RefreshRootFrontSize() {
         let curDoc = document.documentElement;//当前文档的 root 元素
-        let curClientW = curDoc.clientWidth;
+        let curClientW = document.documentElement.clientWidth || document.body.clientWidth;
         if (!curClientW) {
             return
         }
@@ -299,14 +299,34 @@ export class MyUtils {
         console.log("curClientW :", curClientW, "designWidth: ", designWidth, "-> ", nowFrontSize);
         let testDiv = document.getElementById("testDevice");
         testDiv.innerText += "\nnowFrontSize: " + nowFrontSize;
-        // testDiv.innerText = testDiv.innerText +
-        //     // "\n navigator_userAgent :" + navigator.userAgent.toLocaleLowerCase() +
-        //     "\n isMobile :" + /mobi|android|iphone|ipad|ipod/i.test(navigator.userAgent.toLocaleLowerCase()) +
-        //     "\n isIOS :" + /iphone|ipad|ipod/.test(window.navigator.userAgent.toLocaleLowerCase()) +
-        //     "\n isAndroid :" + /android/.test(window.navigator.userAgent.toLocaleLowerCase()) +
-        //     "\n curClientW :" + curClientW +
-        //     " \n designWidth: " + designWidth +
-        //     "\n 1rem =  " + nowFrontSize
+        testDiv.innerText = testDiv.innerText +
+            "\n navigator_userAgent :" + navigator.userAgent.toLocaleLowerCase() +
+            "\n isMobile :" + /mobi|android|iphone|ipad|ipod/i.test(navigator.userAgent.toLocaleLowerCase()) +
+            "\n isIOS :" + /iphone|ipad|ipod/.test(window.navigator.userAgent.toLocaleLowerCase()) +
+            "\n isAndroid :" + /android/.test(window.navigator.userAgent.toLocaleLowerCase()) +
+            "\n curClientW :" + curClientW +
+            " \n designWidth: " + designWidth +
+            "\n 1rem =  " + nowFrontSize;
+
+        // 获取 User-Agent 字符串
+        const userAgent = window.navigator.userAgent;
+        // 获取屏幕宽度
+        // const screenWidth = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;;
+        const screenWidth = document.documentElement.clientWidth || document.body.clientWidth;
+        // 判断是否是手机
+        const isMobile = /Mobile/i.test(userAgent) || screenWidth < 768;
+        // 判断是否是平板电脑
+        const isTablet = /Tablet/i.test(userAgent) || (screenWidth >= 768 && screenWidth < 1024);
+        if (isMobile) {
+            console.log("您正在使用手机访问");
+            testDiv.innerText = testDiv.innerText + "\n您正在使用手机访问 " + window.myEdit.ctx.screenWidth + "*" + window.myEdit.ctx.screenHeight;
+        } else if (isTablet) {
+            console.log("您正在使用平板电脑访问");
+            testDiv.innerText = testDiv.innerText + "\n您正在使用平板电脑访问 " + window.myEdit.ctx.screenWidth + "*" + window.myEdit.ctx.screenHeight;
+        } else {
+            console.log("您正在使用桌面电脑访问");
+            testDiv.innerText = testDiv.innerText + "\n您正在使用桌面电脑访问 " + window.myEdit.ctx.screenWidth + "*" + window.myEdit.ctx.screenHeight;
+        }
     }
 
 
@@ -349,12 +369,16 @@ export class MyUtils {
         //     myEditFrontSize.style.fontSize = window.myEdit.ctx.editFrontSize * dpr + 'px';
         // }
         // myEditFrontSize.style.fontSize = window.myEdit.ctx.editFrontSize * dpr + 'px';
-        myEditFrontSize.style.fontSize = window.myEdit.ctx.editFrontSize + 'px';
+        if (window.myEdit.ctx.isTablet) {
+            myEditFrontSize.style.fontSize = window.myEdit.ctx.editFrontSize * dpr + 'px';
+        } else {
+            myEditFrontSize.style.fontSize = window.myEdit.ctx.editFrontSize + 'px';
+        }
 
 
         // console.log("myEditFrontSize: ", myEditFrontSize.style.fontSize);
         let testDiv = document.getElementById("testDevice");
-        testDiv.innerText = "\ndpr: " + dpr + "\nmyEditFrontSize: " + myEditFrontSize.style.fontSize;
+        testDiv.innerText += "\ndpr: " + dpr + "\nmyEditFrontSize: " + myEditFrontSize.style.fontSize;
     }
 
     /**
diff --git a/static/js/lib/event/MyEventListener.js b/static/js/lib/event/MyEventListener.js
index 2001d9b..549ebd2 100644
--- a/static/js/lib/event/MyEventListener.js
+++ b/static/js/lib/event/MyEventListener.js
@@ -151,7 +151,7 @@ export class MyEventListener {
         let styleUtils = document.getElementById("_style_utils");
         if (window.myEdit.utils.GetSelection().isCollapsed) {
             // console.log("none")
-            if (!window.myEdit.ctx.isMobile) {
+            if (!window.myEdit.ctx.isMobile && !window.myEdit.ctx.isTablet) {
                 styleUtils.style.display = "none";
             }
             return
@@ -197,5 +197,32 @@ export class MyEventListener {
 
         // window.myEdit.utils.ProhibitDefaultEvent(event);
     }
+
+
+    RefreshRootFrontSize(e) {
+        const event = window.myEdit.utils.ParseEvent(e);
+        //忽略高度变化
+        let curClientW = document.documentElement.clientWidth || document.body.clientWidth;
+        if (!curClientW) {
+            return
+        }
+        if (window.myEdit.ctx.screenWidth === curClientW) {
+            window.myEdit.utils.ProhibitDefaultEvent(event);
+            return;
+        }
+    }
+
+    RefreshEditFrontSize(e) {
+        const event = window.myEdit.utils.ParseEvent(e);
+        //忽略高度变化
+        let curClientW = document.documentElement.clientWidth || document.body.clientWidth;
+        if (!curClientW) {
+            return
+        }
+        if (window.myEdit.ctx.screenWidth === curClientW) {
+            window.myEdit.utils.ProhibitDefaultEvent(event);
+            return;
+        }
+    }
 }
 
diff --git a/static/js/lib/main.js b/static/js/lib/main.js
index b8118ec..a87b222 100644
--- a/static/js/lib/main.js
+++ b/static/js/lib/main.js
@@ -4,6 +4,17 @@ import {MyUtils} from './common/MyUtils.js'
 import {MyEventListener} from "./event/MyEventListener.js";
 
 (function () {
+    // 获取 User-Agent 字符串
+    const userAgent = window.navigator.userAgent;
+    // 获取屏幕宽度
+    // const screenWidth = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
+    const screenWidth = document.documentElement.clientWidth || document.body.clientWidth;
+    // 判断是否是手机
+    const isMobile = /mobi|android|iphone|ipad|ipod/i.test(userAgent.toLocaleLowerCase()) || screenWidth < 768;
+    const isIOS = /iphone|ipad|ipod/i.test(userAgent.toLocaleLowerCase()) || screenWidth < 768;
+    const isAndroid = /android/i.test(userAgent.toLocaleLowerCase()) || screenWidth < 768;
+    // 判断是否是平板电脑
+    const isTablet = /tablet/i.test(userAgent.toLocaleLowerCase()) || (screenWidth >= 768 && screenWidth < 1024);
     //init
     window.myEdit = {
         /**
@@ -23,11 +34,14 @@ import {MyEventListener} from "./event/MyEventListener.js";
             /**
              * 是否是手机端
              */
-            isMobile: /mobi|android|iphone|ipad|ipod/i.test(navigator.userAgent.toLocaleLowerCase()),
-            isIOS: /iphone|ipad|ipod/.test(window.navigator.userAgent.toLocaleLowerCase()),
-            isAndroid: /android/.test(window.navigator.userAgent.toLocaleLowerCase()),
+            isMobile: isMobile,
+            isIOS: isIOS,
+            isAndroid: isAndroid,
+            //判断是否是平板电脑
+            isTablet: isTablet,
+            screenWidth: document.documentElement.clientWidth || document.body.clientWidth,
             //高度 for android
-            originHeight: document.documentElement.clientHeight || document.body.clientHeight,
+            screenHeight: document.documentElement.clientHeight || document.body.clientHeight,
             /**
              * 默认body front-size 单位px
              */
@@ -104,16 +118,16 @@ import {MyEventListener} from "./event/MyEventListener.js";
      */
     window.myEdit.utils.RefreshRootFrontSize();
     window.myEdit.utils.RefreshEditFrontSize();
-    document.addEventListener('DOMContentLoaded', window.myEdit.utils.RefreshRootFrontSize);
-    document.addEventListener('DOMContentLoaded', window.myEdit.utils.RefreshEditFrontSize);
+    document.addEventListener('DOMContentLoaded', window.myEdit.eventListener.RefreshRootFrontSize);
+    document.addEventListener('DOMContentLoaded', window.myEdit.eventListener.RefreshEditFrontSize);
     window.addEventListener('pageshow', function (e) {
         if (e.persisted) {
             window.myEdit.utils.RefreshRootFrontSize();
             window.myEdit.utils.RefreshEditFrontSize();
         }
     });
-    window.addEventListener('resize', window.myEdit.utils.RefreshRootFrontSize);
-    window.addEventListener('resize', window.myEdit.utils.RefreshEditFrontSize);
+    window.addEventListener('resize', window.myEdit.eventListener.RefreshRootFrontSize);
+    window.addEventListener('resize', window.myEdit.eventListener.RefreshEditFrontSize);
     /**
      * 窗口撤销事件.
      * js中的键盘事件只有三种：keydown、keyup、keypress。它们触发的顺序是：keydown -> keypress -> keyup。当按下一个键不放开，一般会重复地触发 keydown+keypress，直到放开后触发一个 keyup 事件。
@@ -168,6 +182,24 @@ window.onload = function () {
         window.myEdit.utils.ProhibitDefaultEvent(event);
     }, false);
 
+    // 阻止双击放大
+    var lastTouchEnd = 0;
+    document.addEventListener('touchstart', function (event) {
+        if (event.touches.length > 1) {
+            event.preventDefault();
+        }
+    });
+    document.addEventListener('touchend', function (event) {
+        let now = (new Date()).getTime();
+        if (now - lastTouchEnd <= 300) {
+            event.preventDefault();
+        }
+        lastTouchEnd = now;
+    }, false);
+    // 阻止双指放大
+    document.addEventListener('gesturestart', function (event) {
+        event.preventDefault();
+    });
 
     /**
      * 使用说明
diff --git a/static/js/lib/todolist b/static/js/lib/todolist
index b17b4e8..5e82671 100644
--- a/static/js/lib/todolist
+++ b/static/js/lib/todolist
@@ -1,2 +1,3 @@
-选择文字 第一次添加样式的时候 丢失选区问题
+☑️选择文字 第一次添加样式的时候 丢失选区问题
+pad 上键盘事件 - 无法选择一行字某几个子添加样式