style: 灾害防范灾害预警记录弹窗样式修改

src/views/disaster/overview/components/disaster-warning-records/RecordItem.vue

@@ -22,7 +22,7 @@
         </div>
       </div>
     </template>
-    <div>{{ content }}</div>
+    <div>{{ content ? content : '无发布内容详情' }}</div>
   </el-dialog>
 </template>
 
@@ -117,7 +117,7 @@
 
     .el-dialog__body {
       height: 353px;
-      padding-top: 30px;
+      margin-top: 30px;
       overflow: scroll;
       white-space: pre-wrap;
     }