put some space between buttons on the banuserdialog

client/coral-admin/src/components/BanUserDialog.css

@@ -141,3 +141,7 @@ input.error{
     background-color: 1px solid coral;
     padding: 10px;
 }
+
+.cancel {
+    margin: 10px 0;
+}

client/coral-admin/src/components/BanUserDialog.js

@@ -30,7 +30,7 @@ const BanUserDialog = ({open, handleClose, onClickBanUser, user = {}}) => {
           </i>
         </div>
         <div className={styles.buttons}>
-          <Button cStyle="cancel" onClick={() => handleClose()} full>
+          <Button cStyle="cancel" className={styles.cancel} onClick={() => handleClose()} full>
             {lang.t('bandialog.cancel')}
           </Button>
           <Button cStyle="black" onClick={() => onClickBanUser(userId, commentId)} full>