div.regTrademark{width:100%;min-height:calc(100vh - 500px);background:#fff;border-top:2px solid #28a7e1;background:url(../img/waiting.351607ff.png) 50% no-repeat;background-size:200px}div.regTrademark h1{font-size:18px;margin-top:calc(100vh - 600px)}