style: 样式优化

src/views/chat/index.vue

@@ -362,6 +362,7 @@
             display: flex;
             border: 1px solid #ebeef5;
             .aside {
+                width: 240px;
                 border-right: 1px solid #ebeef5;
                 .aside-header {
                     height: 60px;

src/views/chat/message.vue

@@ -22,7 +22,7 @@
                     <template #header>
                         <div class="flex">
                             <div class="left">商品编号：{{ content.id }}</div>
-                            <el-button type="text">复制</el-button>
+                            <el-button type="text" @click="$copy(content.id)">复制</el-button>
                         </div>
                     </template>
                     <div class="flex">
@@ -228,5 +228,10 @@
                 }
             }
         }
+        &.--custom {
+            .message-body {
+                width: 300px;
+            }
+        }
     }
 </style>