css模拟复选框

div id="del" class="sel_list">
    <input id="add_89" value="89" type="checkbox"/><label for="add_89"></label>dfa
</div>
<div id="del" class="sel_list">
    <input id="add_90" value="90" type="checkbox"/><label for="add_90"></label>dfa
</div>

input{
  display: none;
}
 label{
  width:15px;
  height:15px;
  margin-top:3px;
  margin-right:3px;
  vertical-align:middle;
  background: url(../i/input.png) no-repeat;
  background-size: 100%;
}
input[type=checkbox]:checked + label{
  background: url(../i/input1.png) no-repeat;
  background-size: 100%;
}

input.png

input1.png