input[type='checkbox']{
    width: 20px;
    height: 20px;
    background-color: transparent ;
    -webkit-appearance:none; 
    border: 1px solid #c9c9c9;
    border-radius: 2px;
    outline: none;
    vertical-align: middle;
}
 input[type=checkbox]:checked{
   background: url("./img/1610952617\(1\).jpg") no-repeat ;
   background-position: -3px -3px;
   color: red;

}

   <input type="checkbox" id="zs">
    <label for="zs">全选</label>