diff --git a/public/react/src/modules/courses/exercise/new/NullChildEditor.js b/public/react/src/modules/courses/exercise/new/NullChildEditor.js
index a78028b20..434211f1d 100644
--- a/public/react/src/modules/courses/exercise/new/NullChildEditor.js
+++ b/public/react/src/modules/courses/exercise/new/NullChildEditor.js
@@ -39,14 +39,14 @@ class NullChildEditor extends Component{
     let { question_title, question_score, question_type, question_choices, standard_answers } = this.state;
     let { question_id, index, onAnswerChange, addChildAnswer, toMDMode, exerciseIsPublish, 
         answers } = this.props;
-    
+    // marginTop: '18px'
     return(
-        <div className="df" style={{ marginTop: '18px'}}>
+        <div className="df" style={{ }}>
             <div className="color-grey-6 mb5 mt6" style={{ flex: '0 0 90px'}}>答案(填空{index + 1}):</div>
             <div className="df flex1" style={{flexDirection: 'column'}}>
             {
                 answers.map((item, itemIndex) => {
-                    return <div className="df mb20 flex1" >
+                    return <div className="df flex1" >
                     <div className="flex1" style={{ flex: '0 0 1000px'}}>
                       <DMDEditor
                           className={'nullChildEditor'}
diff --git a/public/react/src/modules/courses/exercise/new/NullEditor.js b/public/react/src/modules/courses/exercise/new/NullEditor.js
index b24768e96..d996a524d 100644
--- a/public/react/src/modules/courses/exercise/new/NullEditor.js
+++ b/public/react/src/modules/courses/exercise/new/NullEditor.js
@@ -282,7 +282,7 @@ class NullEditor extends Component{
                 display: inline-block;
               }
               .content_editorMd_show {
-
+                display: flex;
                 maxWidth: 1000px;
               }
             `}</style>
diff --git a/public/react/src/modules/courses/exercise/new/SingleEditor.js b/public/react/src/modules/courses/exercise/new/SingleEditor.js
index 02efe2443..6120e9aea 100644
--- a/public/react/src/modules/courses/exercise/new/SingleEditor.js
+++ b/public/react/src/modules/courses/exercise/new/SingleEditor.js
@@ -219,9 +219,10 @@ class SingleEditor extends Component{
               }
               .optionRow {
                 margin:0px!important;
-                margin-bottom: 20px!important;
+                /* margin-bottom: 20px!important; */
               }
               .signleEditor .content_editorMd_show{
+                display: flex;
                 margin-top:0px!important;
                 border-radius:2px;
                 max-width: 1056px;