dos

Public/static/css/index.css

@@ -32,6 +32,18 @@ body {
   -webkit-backface-visibility: hidden;
 }
 
+.clearfix:after {
+  content: ".";
+  display: block;
+  height: 0;
+  clear: both;
+  visibility: hidden;
+}
+
+.clearfix {
+  *zoom: 1;
+}
+
 input {
   border: 0;
   outline: none;

Public/static/js/common.js

@@ -80,7 +80,7 @@ let flag = [
 ];
 
 var flagTemplate = $('.flag-frame').find('.flag-block').clone();
-$('.flag-frame').html();
+$('.flag-frame').html('').addClass('clearfix');
 
 $(document).ready(function () {
     $("input").on("blur", function () {