html {height: 100%; width: 100%;} body {font-family: sans-serif; background: url("../img/sayagata-400px.png") repeat; z-index: 1; height: 100%; width: 100%; background-position: center; background-attachment: fixed;} .hidden {display: none;} .menu-item {display: none; z-index: 3;} #bg-overlay { position:fixed; padding:0; margin:0; top:0; left:0; width: 100%; height: 100%; background-color: #fff; opacity: 0; z-index: 2; transition: .3s all; } body.menu-shown #bg-overlay {opacity: 0.3;} #mobile-menu-wrap {z-index: 3; position: absolute; top: 15px; left: 15px;} #mobile-menu-wrap a {font-size: 20px;} .bg {border-radius: 5px; background-color: rgba(0, 0, 0, .5); padding: 20px;} .bg a {color: #fff;} #links-wrap {font-size: 80px; position: fixed; left: 50%; top: 50%; transform: translate(-50%, -50%); /* Not even necessary really. e.g. Height could be left out! */ width: -moz-fit-content; width: -webkit-fit-content; max-width: 80%; max-height: 90%; overflow: auto; display: flex; } #links-wrap a {transition: .3s all;} #links-wrap a:hover {color: #d3d3d3;} #links-wrap .link {display: inline-block; width: 33%; float: left; text-align: center;} #pic-info-wrap {color: #fff; font-size: 16px; position: absolute; bottom: 15px; left: 15px;} #pic-info-wrap a:hover, #pic-info-wrap a:active {color: #fff; text-decoration: none;} #clock-wrap {color: #fff; font-size: 30px; position: absolute; top: 15px; right: 15px;}