fix: layout style

src/layout/LayoutLeft/index.scss

@@ -53,7 +53,8 @@
       }
     }
   }
-  .el-header {
+  //.el-header {
+  .le-layout-header {
     box-sizing: border-box;
     display: flex;
     align-items: center;

src/layout/LayoutLeftMix/index.scss

@@ -122,7 +122,8 @@
       }
     }
   }
-  .el-header {
+  //.el-header {
+	.le-layout-header {
     box-sizing: border-box;
     display: flex;
     align-items: center;

src/layout/LayoutTopMix/index.scss

@@ -2,7 +2,8 @@
 .#{$prefix}layout-wrap--topMix {
   width: 100%;
   height: 100%;
-	.el-header {
+	//.el-header {
+	.le-layout-header {
     box-sizing: border-box;
     display: flex;
     align-items: center;