.box {
    width: 100%;
    height: 100%;
    background:url("../image/sider3.jpg") no-repeat;
    background-size: 100% 100%;
}
.title-3 {
    width: 700px;
    height: 450px;
    margin: 0 auto;
    padding-top: 30px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}
.title-3-1 {
    font-size: 28px;
    color: #fff;
    letter-spacing: 10px;
    text-align: center;
    margin: 0 auto;
    margin-bottom: 50px;
}
.title-3-2 {
    font-size: 28px;
    color: #fff;
    letter-spacing: 10px;
    margin: 0 auto;
    text-align: center;
    margin-bottom: 35px;
}
.title-3-2>span{
    font-size: 14px;
    letter-spacing: 0px;
}
.title-3-3 {
    font-size: 20px;
    color: #FFFFFF;
    margin: 0 auto;
    text-align: center;
}
.banq {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
}
.banq >a {
    color: #fff;
    margin-left: 10px;
}