Merge branch 'dev-header-20200325' into 'release'

优化敏感数据头部系统切换 code reviewer：杨广俊



See merge request !1

src/components/common/Header.vue

@@ -18,7 +18,7 @@
                 <span class="el-dropdown-link">
                     {{'系统切换'}}<i class="el-icon-arrow-down el-icon--right"></i>
                 </span>
-                <el-dropdown-menu slot="dropdown">
+                <el-dropdown-menu slot="dropdown" class="nav-dropdown">
                     <el-dropdown-item v-for="item in systemInfoList" :key="item.id">
                         <span class="menu-item" @click="forward(item)">{{item.systemName}}</span>
                         <!--<el-tag type="warning" @click="forward(item)">{{item.system_name}}</el-tag>-->
@@ -176,9 +176,14 @@
         text-align: center;
     }
 
+    .nav-dropdown .el-dropdown-menu__item{
+        padding: 0;
+    }
     .menu-item {
         font-size: 14px;
         font-weight: 300;
         color: #606266;
+        display: block;
+        padding: 0 20px;
     }
 </style>