修改checkbox样式

input[type="checkbox"] {
    width: 16px;
    height: 16px;
    display: inline-block;
    text-align: center;
    vertical-align: middle;
    position: relative;
    margin-top: -2px;
    outline: none;
}
 
input[type="checkbox"]::before {
    content: "";
    position: absolute;
    top: 0px;
    left: 0px;
    background: #fff;
    width: 100%;
    height: 100%;
    border: 1px solid #655EFA;
    border-radius: 4px;
    box-sizing: content-box;
    outline: none;
}
 
input[type="checkbox"]:checked::before {
    content: "\2713";
    background-color: #655EFA;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    border: 1px solid  #655EFA;
   outline: none;
    color: #fff;
    font-size: 10px;
    font-weight: bold;
    border-radius: 4px;
  
}

去除input边框
input{
    border:0;
    webkit-box-shadow:none;
    box-shadow:none;
}
去除input选中时的蓝色边框线
input:focus{
    border-color:#fff;
    webkit-box-shadow:none;
    box-shadow:none;
}