update：更新

src/layout/edit-view-layout/edit-view-layout.vue

 <template>
     <layout class="edit-view-layout view-layout view-container">
         <header class="view-header">
-            <div class="view-header__left">
-                <slot name="headerLeft" />
+            <div class="view-header__top">
+                <slot name="headerTop" />
             </div>
-            <div class="view-header__center">
-                <slot name="headerCenter" />
+            <div class="view-header__content">
+                <div class="view-header__left">
+                    <slot name="headerLeft" />
+                </div>
+                <div class="view-header__center">
+                    <slot name="headerCenter" />
+                </div>
+                <div class="view-header__right">
+                    <slot name="headerRight" />
+                </div>  
             </div>
-            <div class="view-header__right">
-                <slot name="headerRight" />
-            </div>   
+            <div class="view-header__bottom">
+                <slot name="headerBottom" />
+            </div>  
         </header>
         <content class="view-content content-container">
             <slot />