diff --git a/public/react/src/modules/modals/SendTopics.js b/public/react/src/modules/modals/SendTopics.js
index 626f3828f..265bcc7d7 100644
--- a/public/react/src/modules/modals/SendTopics.js
+++ b/public/react/src/modules/modals/SendTopics.js
@@ -119,9 +119,7 @@ class SendTopics extends Component{
 						  height:221px;
 						  overflow-y: auto;
 						}
-						.ml200{
-						 margin-left:200px;
-						}
+
 						`
 					}
 				</style>
@@ -165,8 +163,8 @@ class SendTopics extends Component{
 
             </div>
 						{showcheck===true?<div className={"color-red mt10"}>请先选择课堂</div>:""}
-            <div className="mt20 clearfix edu-txt-center ml200" >
-              <a onClick={()=>this.props.topicscancelmodel()} className="pop_close task-btn mr30 fl">取消</a>
+            <div className="mt20 clearfix edu-txt-center" >
+              <a onClick={()=>this.props.topicscancelmodel()} className="pop_close task-btn mr30 ">取消</a>
 				    	<a className="task-btn task-btn-orange" onClick={()=>this.submitInfo()}>确定</a>
             </div>
           </div>