.switch-wrap{
    position: relative; display: inline-block;
    width: 52px; height: 32px;
    border: 1px solid #DFDFDF; outline: none;
    border-radius: 16px; box-sizing: border-box;
    background: #FFFFFF; cursor: pointer;
    transition: border-color .3s,background-color .3s;
    vertical-align: middle;
}
.switch-wrap span{
    position: absolute; top: 0; left: 0;
    transition: transform 0.3s;
    width: 30px; height: 30px; border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.4);
    background-color: #fff;
}
.switch-wrap.active{ border-color: #33DB70; background-color: #33DB70; }
.switch-wrap.active span{ transform: translateX(20px); }