html {
    box-sizing: border-box;
}

body {
    background-size: 100% auto;
    font-size:15px;
    font-family:Microsoft YaHei;
    font-weight:400;
    color:rgba(67,73,85,1);
    overflow-x: none;
    margin: 0;
}

.row {
    margin: 0;
}

.home .header {
    height: 88px;
    padding-left: 310rpx;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slogan {
    background-image: url(../images/b1.png);
    background-repeat: no-repeat;
    background-position: top center;
    background-size: 100%, 100%;
    min-height: 560px;
}
@media only screen and (max-width: 1400px) {
    .slogan {
    min-height: 500px; } }
@media only screen and (max-width: 1200px) {
    .slogan {
    min-height: 500px; } }
@media only screen and (max-width: 992px) {
    .slogan {
    min-height: 500px; } }
@media only screen and (max-width: 768px) {
    .slogan {
    min-height: 500px; } }
@media only screen and (max-width: 576px) {
    .slogan {
    min-height: 500px; } }

.b2 {
    height: 530px;
    display: flex;
    align-items: center;
}

.f1 {
    font-size:20px;
    font-family:Microsoft YaHei;
    font-weight:bold;
    color:rgba(33,38,47,1);
}

.f2 {
    font-size:15px;
    font-family:Microsoft YaHei;
    font-weight:400;
    color:rgba(67,73,85,1);
    text-align: justify;
}

.b3 {
    background:rgba(243,246,248,1);
    height:904px;
    min-width: 460px;
}

.block {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 70px 0;
}

.f3 {
    font-size:1.2em;
    font-family:Microsoft YaHei;
    font-weight:bold;
    color:rgba(33,38,47,1);
}

.s {
    background:rgba(255,255,255,1);
    box-shadow:0px 8px 12px 0px rgba(174,174,174,0.05);
    text-align: center;
    padding: 30px 30px;
    border-radius: 70px;
}

.line {
    width:18px;
    height:3px;
    background:rgba(254,155,0,1);
    margin: 0 auto;
}

.f4 {
    font-size:22px;
    font-family:Microsoft YaHei;
    font-weight:400;
    color:rgba(0,0,0,1);
}

.f5 {
    font-size:12px;
    font-family:Microsoft YaHei;
    font-weight:400;
    color:rgba(51,51,51,1);
    text-align: center;
}

.ys {
    background-image: url(../images/ys.png);
    background-repeat: no-repeat;
    background-position: top center;
    background-size: 100%, 100%;
    min-height: 560px;
}