.box_list a.tag-formation {
  position: absolute;
  right: 15px;
  top: 15px;
  z-index: 1;
  background-color: white;
  padding: 9px 10px;
  display: inline-block;
  color: #555;
  line-height: 1;
  -webkit-border-radius: 3px;
  -moz-border-radius: 3px;
  -ms-border-radius: 3px;
  border-radius: 3px;
}