body{
    background-color: #181818;
}

.perch{
    width: 100%;
    height: 250rem;
    margin-top: 40rem;
    background-image: url(../imgs/950df407e093c5379b579f4a6dc10d9.png);
    background-position: center center;
    background-size: 100% 100%;
}

.erweima{
    width: 100%;
    padding: 20rem 0 0;
    text-align: center;
    color: #fff;
}

.item-title{
    width: 100%;
    height: 32rem;
    font-family: SourceHanSansSC-black;
    font-size: 24rem;
    font-weight: bold;
    line-height: 32rem;
    text-align: center;
}

.item-text{
    color: #fff;
    font-size: 18rem;
    text-align: center;
    padding: 12rem 0 26rem;
}

.item>span{
    margin: 0 10rem;
}

.erweima img{
    width: 200rem;
    height: 200rem;
}