fix: issue #1169 fix table style

Author: yoution

src/components/ChallengeEditor/Registrants/Registrants.module.scss

@@ -20,6 +20,7 @@ $member-red:  #ea1900;
   padding-bottom: 197px;
   max-width: 966px;
   margin: 0 auto;
+  margin-top: 30px;
 
   @include xs-to-sm {
     padding: 0 30px 30px;

src/components/ChallengeEditor/Submissions/Submissions.module.scss

@@ -192,6 +192,7 @@ $base-unit: 5px;
   width: 100%;
   margin: 0 auto;
   padding-bottom: 30px;
+  margin-top: 30px;
   line-height: 50px;
   // text-align: center;