.centerDiv{
    position: relative;
}

.buy{
    position: absolute;
    z-index: 10;
    right: 30px;
    top:80px;
    width: 200px;
    height: 70px;
    border-radius: 47px;
    color: #fff;

    font-family: "Microsoft YaHei";
    font-weight: 400;
    font-size: 1.5rem;
    text-align: left;
    background-color: rgba(0, 0, 0, 0.18);
    text-align: center;
    line-height: 70px;
}

.frontImg{
    width: 100%;
    height: 56.25vw;
    position: relative;
}

.frontImg img{
    width: 100%;
    height: 100%;
    max-height: 56.25vw;
}

.frontImgInfo{
    position: absolute;
    top:20%;
    width: 100%;
}
.frontImgInfo p{
    text-align: center;
    font-family: "Microsoft YaHei";
    font-weight: 400;
    font-size: 3rem;
    letter-spacing: 0.02px;
    text-align: center;
    color: #fff;
}

.centerInfo{
    width: 100%;
    
}

.centerBrief{
    width: 100%;
    margin-top: 200px;
}
.centerBrief p{
    font-family: "Microsoft YaHei";
    font-weight: 400;
    font-size: 2.25rem;
    letter-spacing: 0.02px;
    text-align: center;
    color: #000;
}

.infoImg{
    width: 100%;
    display: flex;
    flex-direction: column;
    margin-top: 80px;
    margin-bottom: 150px;
}

.infoImg img{
    width: 75%;
    margin:  80px auto;
}