.banner{width:100%;height:360px;background-color:#051423;background-size:auto 100%;z-index:-10;background-position:center center;background-repeat:no-repeat;margin:68px 0 84px;border:0}.proposal,.proposal_img{text-align:center}.proposal{width:100%}.pc_image{text-align:center;height:1638px}.mobile_banner,.mobile_image{display:none}