diff --git a/css/macdefault.css b/css/macdefault.css
index b6c003e..bd6d6fc 100644
--- a/css/macdefault.css
+++ b/css/macdefault.css
@@ -63,11 +63,7 @@ body {
 
 #win10 .desktop {
     width: 100%;
-    height: calc(100% - 90px);
-    position: absolute; 
-    left: 0px; 
-    top: 30px;
-    bottom: 60px;
+    height: 100%;
 }
 
 #win10_task_bar {
@@ -326,7 +322,7 @@ body {
 }
 
 #win10 #win10-shortcuts {
-    height:100%;
+    height: calc(100% - 30px);
     position: absolute;
     left: 0;
     top: 0;
@@ -377,10 +373,10 @@ body {
 #win10_command_center {
     position: fixed;
     right: 0;
-    top: 30px;
+    top: 31px;
     width: 350px;
     background-color: rgba(255, 255, 255, 0.7);
-    height: calc(100% - 30px);
+    height: calc(100% - 32px);
     transition: all 0.5s;
     overflow-x: hidden;
     overflow-y: auto;
@@ -693,7 +689,7 @@ body {
 
 .win10-open-iframe .layui-layer-content{
     background-color: white;
-    max-height:100%;
+    max-height: calc(100% - 32px);
 }
 
 .win10-open-iframe .layui-layer-title{
diff --git a/js/mac.js b/js/mac.js
index be7314d..74d8942 100644
--- a/js/mac.js
+++ b/js/mac.js
@@ -227,10 +227,10 @@ window.Win10 = {
             var layero_opened=$(this);
             var height=layero_opened.css('height');
             height=parseInt(height.replace('px',''));
-            if (height+40>=clientHeight){
-                layero_opened.css('height',clientHeight-40);
-                layero_opened.find('.layui-layer-content').css('height',clientHeight-83);
-                layero_opened.find('.layui-layer-content iframe').css('height',clientHeight-83);
+            if (height+30>=clientHeight){
+                layero_opened.css('height',clientHeight-30);
+                layero_opened.find('.layui-layer-content').css('height',clientHeight-62);
+                layero_opened.find('.layui-layer-content iframe').css('height',clientHeight-62);
             }
         })
     },
@@ -560,7 +560,7 @@ window.Win10 = {
             $("#win10-shortcuts").css({
                 position: 'absolute',
                 left: 0,
-                top: 0,
+                top: 30,
                 'z-index': 100,
             });
             $("#win10 .desktop").append("<div id='win10-desktop-scene' style='width: 100%;height:100%;position: absolute;left: 0;top:0; z-index: 0;background-color: transparent;'></div>")