.si-top img{
    width: 100%;
    margin-top:100px;
    vertical-align: bottom;
}

.si-title{
    text-align: center;
}
.si-title h2{
    font-size: 30px;
    margin-top: 60px;
    line-height: 200%;
}
.si-title h3{
    font-size: 14px;
    color: #747474;
    font-weight: normal;
    line-height: 150%;
}
.si-title p{
    font-size: 14px;
    color: #747474;
    line-height: 350%;
}
.si-list{
    width: 1140px;
    
    padding-top: 60px;
    margin: 0 auto;
}
.si-list ul{
	overflow:hidden;
}
.si-list ul li{
    width: 22%;
    float: left;
    margin-left: 3%;
    position: relative;
    cursor: pointer;
	margin-bottom: 30px;
}
.si-list ul li:nth-child(1){
    margin-left: 1%;
}
.si-list ul li img{
    width: 100%;
}
.oneS_a{
	display:block;
}
.si-list ul li a.twoS_a{
	
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 10px solid #ffffff;
    display: block;
    text-align: center;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -75px;
    margin-left: -75px;
    /*padding-top: 30px;*/
}
.si-list ul li a.twoS_a p{
    font-size: 32px;
    color: #ffffff;
    letter-spacing: 3px;
    font-weight: bold;
}

.sil-active a.twoS_a{
    width: 180px !important;
    height: 180px !important;
    border-radius: 100px !important;
    margin-top: -90px !important;
    margin-left: -90px !important;
    
}
.sil-active a p{
    font-size: 38px !important;
}