.smart_sport,.system_design,.applyCase {
    width: 92%;
    margin: .72rem 4%;
}
.sport_introduce,.system_introduce{
    width: 100%;
    font-size: .4rem;
    line-height: .57rem;
}
.sport_head,.design_head {
    width: 100%;
    margin: .67rem 0 .57rem 0;
    float: left;
    display: block;
}
.sport_head > span:first-child,.design_head > span:first-child{
    font-size: .48rem;
    line-height: .4rem;
    font-weight: bold;
}
.sport_head > span:nth-child(2),.design_head > span:nth-child(2){
    color: #8a8a8a;
    font-size: .4rem;
    line-height: .4rem;
}
.design_content {
    width: 100%;
    overflow: auto;
}
.design_content > img {
    width: 100%;
}
.design_content > img:nth-child(2) {
    margin-top: .48rem;
}
.system_introduce {
    margin-top: .67rem;
}
.sport_service {
    width: 100%;
}
.sport_service > img {
    margin-top: .93rem;
    width: 100%;
    display: block;
}
.black_triangle {
    width: 0;
    height: 0;
    border:  5px solid;
    border-color: transparent transparent black black;
    display: inline-block;
    margin-left: .3rem;
}
.applyCase{
    margin-top: .8rem;
}
.case_head {
    font-size: .427rem;
}
.case_content {
    width: 100%;
    margin: .67rem 0 .57rem 0;
    float: left;
    display: block;
}
.bikingCase_content {
    margin-top: .4rem;
    width: 100%;
    overflow: auto;
}
.bikingCase_content > img {
    width: 100%;
    display: block;
}
.apply_type > a:first-child{
    background: rgb(0,179,254);
    color: white;
}