fix样式

static/html/chat_main.html

@@ -17,8 +17,8 @@
         .chatBg{min-height: 100%;background: #fff;border: solid 1px #e6e6e6;overflow: hidden;}
         .chatLeft{    margin-left: 4px;}
         .sw-bg{background: #fff;border: solid 1px #e6e6e6;boder-top:none;padding:5px 10px;}
-        .chatContext .el-row{margin-bottom: 5px;}
-        .chatContext{position: relative;}
+        .chatBgContext .el-row{margin-bottom: 5px;}
+        .chatBgContext{position: relative;}
         .chatUser{
             line-height: 24px;
             font-size: 12px;
@@ -104,7 +104,7 @@
                     </div>
                 </el-col>
                 <el-col :span="12">
-                    <div class="sw-bg chatContext">
+                    <div class="sw-bg chatBgContext">
                         <el-alert
                                 :title="chatTitle"
                                 type="success">