body,html{padding:2.5em;height:100%}.title404{text-align:center;font-size:3em}.content404{text-align:center;font-size:2.5em}.c404img{display:flex;justify-content:center}.c404img img{filter:opacity(25%) blur(10px);width:30em}footer{position:absolute;bottom:0;margin:2.5em}