fix bug

src/styles/top.scss

@@ -20,8 +20,10 @@
 
 .avue-breadcrumb {
   height: 100%;
+  color: #fff;
 
   i {
+    color: #fff;
     font-size: 30px !important;
   }
 
@@ -130,7 +132,7 @@
   height: 100%;
   padding-left: 50px;
   box-sizing: border-box;
-  background: url('/img/系统首页顶部背景图.png') center center / cover no-repeat;
+  background: var(--el-color-primary);
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
@@ -141,7 +143,7 @@
 .avue-logo {
   height: variables.$top_height;
   line-height: variables.$top_height;
-  background-color: #031527;
+  background-color: var(--el-color-primary);
   font-size: 20px;
   overflow: hidden;
   box-sizing: border-box;
@@ -153,6 +155,7 @@
     text-align: center;
     font-weight: bold;
     font-size: 20px;
+    color: #fff;
   }
 
   &_subtitle {