feat: UI优化

src/views/customerService/chatDetail.vue

@@ -8,7 +8,7 @@
     <el-container v-loading="loading" style="width: 100%;height: 100%; border: 1px solid #eee">
       <el-aside style="width: 20%;background-color: white;padding: 0;min-width: 240px">
         <div class="top-tabs" style="background: white;position: fixed; width: 20%;min-width: 240px">
-          <el-tabs style="padding: 5px 10px 0;min-width: 240px" @tab-click="handleClick">
+          <el-tabs style="padding: 5px 10px 0;min-width: 220px" @tab-click="handleClick">
             <el-tab-pane v-for="(item) in customerList" :key="item.code" >
               <div slot="label">
                 <div class="span-box">
@@ -831,6 +831,9 @@ export default {
       height: 58px;
       background: white;
       padding: 8px;
+      z-index: 1001;
+      position: relative;
+      top: 0;
     }
 
     .chat-message-list {