.floating-header{margin-top:20px;margin-left:15px;margin-right:15px}@media (min-width: 640px){.floating-header{margin-left:30px;margin-right:30px}}html,body{width:100%;height:100%;margin:0;padding:0;overflow:hidden}body{background-color:#c0cfe2;transition:background-color 5s}body.night{background-color:#131d2a}