纯css写一个switch开关

<div class="switch-box">
    <div class="bg_con">
        <input id="checked_1" type="checkbox" class="switch"  value="0" />
        <label for="checked_1"></label>
    </div>
</div>    

.switch-box{
    width:42px;
}
 .switch-box .switch{
    display:none;
}
 .switch-box label{
    position:relative;
    display: block;
    padding: 1px;
    border-radius: 24px;
    height: 22px;
    margin-bottom: 15px;
    background-color: #eee;
    cursor: pointer;
    vertical-align: top;
    -webkit-user-select: none;
}
 .switch-box label:before{
    content: ‘‘;
    display: block;
    border-radius: 24px;
    height: 22px;
    background-color: white;
    -webkit-transform: scale(1, 1);
    -webkit-transition: all 0.3s ease;
}
 .switch-box label:after{
    content: ‘‘;
    position: absolute;
    top: 50%;  
    left: 50%;  
    margin-top: -11px;  
    margin-left: -11px;
    width: 22px;
    height: 22px;
    border-radius: 22px;
    background-color: white;
    box-shadow: 1px 1px 1px 1px rgba(0,0,0,0.08);
    -webkit-transform: translateX(-9px);
    -webkit-transition: all 0.3s ease;
}
 .switch-box .switch:checked~label:after{
    -webkit-transform: translateX(9px);
}
 .switch-box .switch:checked~label:before{
    background-color:#de0b23;
}