body{margin: 0;padding: 0;background: #2a3453}
.header{font-size: 0;position: relative;}
.header>img{width: 100%}
/*.fir-img{min-height: 186px}*/
/*.sec-img{min-height: 379px;margin-top: -1px;}*/
/*.thi-img{min-height: 291px}*/
.btn-wrap{width: 100%;font-size: 0;text-align: center;position: absolute;left: 0;bottom: 16.5%;}
.btn-wrap img{height: 55px;width: 281px;}
.first-wrap{position: relative;}
.rule{
    position: absolute;
    top: 10px;
    right: 10px;
    color: #697b9c;
    font-family: miui;
    z-index: 10000;
    font-size: 14px;
    background: #232834;
    padding: 2px 4px;
    border-radius: 7px;
}

.car-ins-logo{
    width: 100%;
    box-sizing: border-box;
    padding: 0 20% 10px;
    text-align: center;

}

.car-ins-logo img{
    height: 30px;
}