.clear {
  clear: both;
  display: block;
  overflow: hidden;
  visibility: hidden;
  width: 0;
  height: 0;
  margin:0;
  padding:0;
  border: none;
}
.clearfix:before,
.clearfix:after {
  content: '\0020';
  display: block;
  overflow: hidden;
  visibility: hidden;
  width: 0;
  height: 0;
  margin:0;
  padding:0;
}
.clearfix:after {
  clear: both;
}