*{
    padding: 0;
    margin: 0;
}
#wrapper{
    position: relative;
    padding: 0;
    width: 100%;
    height: 41.3vw;
}
#wrapper .content{
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
#wrapper>.content>.imgs{
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    list-style: none;
}
#wrapper>.content>.imgs li{
    position:absolute;
    top:0;
    left:0;
    bottom:0;
    right:0;
    width: 100%;
    height: 100%;
}
#wrapper>.content>.imgs>li img{
    width: 100%;
    height: 100%;
}
#wrapper>.content>.dots{
    position: absolute;
    right: 10px;
    bottom: 10px;
    list-style: none;
}
#wrapper>.content>.dots li{
    float: left;
    width: 20px;
    height: 20px;
    text-align: center;
    line-height: 20px;
    border-radius: 50%;
    margin-left:10px ;
    cursor: pointer;
}

li.active{
    background-color: white;
}
li.quiet{
    background-color: #5a5a58;
}

.btns{
    display: none;
}
.btns span{
    position: absolute;
    width: 40px;
    height: 40px;
    top: 50%;
    margin-top: -20px;
    line-height: 40px;
    text-align: center;
    font-weight: bold;
    font-family: Simsun;
    font-size: 30px;
    border: 1px solid #fff;
    opacity: 0.5;
    cursor: pointer;
    color: #fff;
    background: black;
}
.btns .left{
    left: 5px;
}
.btns .right{
    left: 100%;
    margin-left: -45px;
}