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.clearfix:after {
  display:block;
  clear:both;
  content:"";
}

.clearfix:after {
  content: "."; 
  display: block; 
  clear: both;
  height: 0;
  visibility: hidden;
}
.clearfix {
  min-height: 1px;
}
* html .clearfix {
  height: 1px;
  /*¥*//*/
  height: auto;
  overflow: hidden;
  /**/
}