.page-404{flex-grow:1;display:flex;flex-direction:column;position:relative;height:100%;overflow:auto}.page-404 .middle-box{max-width:700px;margin:0 auto;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}.page-404 .align-center{text-align:center}.page-404 p{padding:15px}.page-404 h2.main-title{color:#bbb;padding-top:60px}.page-404 h3{margin-bottom:30px}.page-404 h3 img{width:100%}.page-404 h4{padding:10px}.page-404 h4 small{color:#999}