diff --git a/public/serverConfig.json b/public/serverConfig.json
index b265b7071..23097b9ee 100644
--- a/public/serverConfig.json
+++ b/public/serverConfig.json
@@ -1,7 +1,7 @@
 {
   "Version": "2.0.0",
   "Title": "PureAdmin",
-  "FixedHeader": false,
+  "FixedHeader": true,
   "HiddenSideBar": false,
   "KeepAlive": true,
   "Locale": "zh",
diff --git a/src/layout/components/appMain.vue b/src/layout/components/appMain.vue
index 49c9d15dc..a31254e4a 100644
--- a/src/layout/components/appMain.vue
+++ b/src/layout/components/appMain.vue
@@ -50,22 +50,9 @@ const transition = computed(() => {
 
 <style scoped>
 .app-main {
-  min-height: calc(100vh - 70px);
   width: 100%;
-  height: 90vh;
+  height: 100vh;
   position: relative;
   overflow-x: hidden;
 }
-
-.fixed-header + .app-main {
-  padding-top: 50px;
-}
-</style>
-
-<style lang="scss">
-.el-popup-parent--hidden {
-  .fixed-header {
-    padding-right: 15px;
-  }
-}
 </style>
diff --git a/src/layout/index.vue b/src/layout/index.vue
index 266fa0885..f4c71630c 100644
--- a/src/layout/index.vue
+++ b/src/layout/index.vue
@@ -234,19 +234,6 @@ onBeforeMount(() => {
   z-index: 999;
 }
 
-.fixed-header {
-  position: fixed;
-  top: 0;
-  right: 0;
-  z-index: 9;
-  width: calc(100% - 210px);
-  transition: width 0.28s;
-}
-
-.mobile .fixed-header {
-  width: 100%;
-}
-
 .re-screen {
   margin-top: 12px;
 }
diff --git a/src/style/sidebar.scss b/src/style/sidebar.scss
index 79fb07802..53768a0a6 100644
--- a/src/style/sidebar.scss
+++ b/src/style/sidebar.scss
@@ -23,6 +23,15 @@
     position: relative;
   }
 
+  .fixed-header {
+    position: fixed;
+    top: 0;
+    right: 0;
+    z-index: 9;
+    width: calc(100% - 210px);
+    transition: width 0.28s;
+  }
+
   .el-popper.is-light {
     border: none !important;
   }
@@ -402,6 +411,11 @@
 
   // 手机端
   .mobile {
+    .fixed-header {
+      width: 100% !important;
+      transition: width 0.28s;
+    }
+
     .main-container {
       margin-left: 0 !important;
     }
@@ -429,9 +443,14 @@
 }
 
 body[data-layout="vertical"] {
+  .fixed-header + .app-main {
+    padding-top: 85px;
+  }
+
   .hideSidebar {
     .fixed-header {
-      width: calc(100% - 54px);
+      width: calc(100% - 54px) !important;
+      transition: width 0.28s;
     }
 
     .sidebar-container {
@@ -478,6 +497,17 @@ body[data-layout="vertical"] {
   }
 }
 
+body[data-layout="horizontal"] {
+  .fixed-header {
+    width: 100% !important;
+    transition: none !important;
+  }
+
+  .fixed-header + .app-main {
+    padding-top: 98px;
+  }
+}
+
 // vertical模式下暗色主题
 body[data-layout="vertical"][data-theme="dark"] {
   $subMenuActiveText: #f4f4f5;