.page-banner{position:relative;height:450px}.page-banner_cont{width:100%;height:100%;background-size:auto 100%;background-position:top;background-repeat:no-repeat}.page-banner_cont .common-banner-box{position:relative;height:100%;width:1200px;margin:0 auto}.page-banner_cont{background-image:url(../images/banner/page_banner_pc.png)}@media screen and (max-width:750px){.page-banner{position:relative;height:3.75rem}.page-banner_cont .common-banner-box{display:none}.page-banner_cont{background-image:url(../images/banner/page_banner_m.png)}}