update：更新

src/components/layout-element/index/app-index-nav-tabs/app-index-nav-tabs.less

+.app-index-nav-tabs {
+    background-color: #f0f2f5;
+}
\ No newline at end of file

src/components/layout-element/structure/app-nav-pos/app-nav-pos.less

 .app-nav-pos {
     width: 100%;
     height: 100%;
-    &.is-index-layout {
-        background-color: #f0f2f5;
-        >.app-view-layout {
-            padding: 0 12px;
-        }
     >.view-container {
         height: 100%;
         width: 100%;
     }
-    }
 }
\ No newline at end of file

src/components/layout-element/structure/app-nav-pos/app-nav-pos.vue

@@ -118,7 +118,7 @@ export default class AppNavPos extends Vue {
     get curClassName() {
         const currentModel = this.layoutModelDetails[this.itemName];
         if (currentModel) {
-            return `app-nav-pos ${this.itemName} ${currentModel.sysCss} ${Object.is(currentModel.viewType, 'APPINDEXVIEW') && 'is-index-layout'}`;
+            return `app-nav-pos ${this.itemName} ${currentModel.sysCss}`;
         }
 
     }
@@ -131,7 +131,11 @@ export default class AppNavPos extends Vue {
     get curStyle() {
         const currentModel = this.layoutModelDetails[this.itemName];
         if (currentModel) {
-            return currentModel.getElementStyle();
+            const containerStyle = currentModel.getElementStyle();
+            if (Object.is(currentModel.viewType, 'APPINDEXVIEW')) {
+                Object.assign(containerStyle, { 'background-color': '#f0f2f5' });
+            }
+            return containerStyle;
         }
     }
 

src/styles/default.less

@@ -293,6 +293,7 @@
 .app-view-layout{
     width: 100%;
     height: 100%;
+    padding: 0 12px;
     background-color: #ffffff;
     .container-item__pos{
         display: flex;
@@ -310,6 +311,9 @@
         padding: 0;
     }
 }
+.app-view-layout__appindexview {
+    padding: 0;
+}
 
 // 看板视图，卡片模式
 // .view-container.appportalview,.view-container.deportalview,.view-container.deportalview9{