.image_input_checkbox{
    width:18px;
    height:18px;
    display: inline-block;
    vertical-align: middle;
    -webkit-appearance: none;
    outline:0 none !important;
    border:1px solid lightgray ;
    line-height: 20px;
    color: #d8d8d8;
}
.image_input_checkbox:checked{
    width:20px;
    height:20px;
    background-image: url("/images/common/check_box.png");
    background-size: 20px 20px;
    border:0;
}

 backgroud-image,里面url圖片自己找===》百度iconfont