.showBg {
    background-image: url('/static/images/banner/show-banner.png');
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    width: 100vw;
    height: 24.427vw;
    margin-top: 78px;
}
.case {
    padding-top: 0;
}
.t-nav {
    padding-top: 4.479vw;
}