Une page d'erreur 404 avec du pur CSS

Salut les lecteurs pour ce nouveau tutoriel on va créer une page d'erreur 404 avec CSS sans écrire une seule ligne de JavaScript. Si vous etes allons y...

Code Source:

Tous d'abord nous allons devoir créer deux fichier l'une se nomme index.html et l'autre style.css n'oubliez pas d'associer ces deux fichier avec la fonction <link rel="stylesheet" href="/style.css"> Collez ce code sur votre page HTML.

Code HTML:

Ouvrer votre fichier HTML et collez y ce code:

 <div id="clouds">
            <div class="cloud x1"></div>
            <div class="cloud x1_5"></div>
            <div class="cloud x2"></div>
            <div class="cloud x3"></div>
            <div class="cloud x4"></div>
            <div class="cloud x5"></div>
        </div>
        <div class='c'>
            <div class='_404'>404</div>
            <hr>
            <div class='_1'>THE PAGE</div>
            <div class='_2'>WAS NOT FOUND</div>
            <a class='btn' href='#'>BACK TO MARS</a>
        </div>

Code CSS:

Maintenant ouvrez votre fichier css et collez y ce code:

@import url(https://fonts.googleapis.com/css?family=opensans:500);
body{
                background: #33cc99;
                color:#fff;
                font-family: 'Open Sans', sans-serif;
                max-height:700px;
                overflow: hidden;
            }
            .c{
                text-align: center;
                display: block;
                position: relative;
                width:80%;
                margin:100px auto;
            }
            ._404{
                font-size: 220px;
                position: relative;
                display: inline-block;
                z-index: 2;
                height: 250px;
                letter-spacing: 15px;
            }
            ._1{
                text-align:center;
                display:block;
                position:relative;
                letter-spacing: 12px;
                font-size: 4em;
                line-height: 80%;
            }
            ._2{
                text-align:center;
                display:block;
                position: relative;
                font-size: 20px;
            }
            .text{
                font-size: 70px;
                text-align: center;
                position: relative;
                display: inline-block;
                margin: 19px 0px 0px 0px;
                /* top: 256.301px; */
                z-index: 3;
                width: 100%;
                line-height: 1.2em;
                display: inline-block;
            }
           

            .btn{
                background-color: rgb( 255, 255, 255 );
                position: relative;
                display: inline-block;
                width: 358px;
                padding: 5px;
                z-index: 5;
                font-size: 25px;
                margin:0 auto;
                color:#33cc99;
                text-decoration: none;
                margin-right: 10px
            }
            .right{
                float:right;
                width:60%;
            }
            
            hr{
                padding: 0;
                border: none;
                border-top: 5px solid #fff;
                color: #fff;
                text-align: center;
                margin: 0px auto;
                width: 420px;
                height:10px;
                z-index: -10;
            }
            
            hr:after {
                content: "\2022";
                display: inline-block;
                position: relative;
                top: -0.75em;
                font-size: 2em;
                padding: 0 0.2em;
                background: #33cc99;
            }
            
            .cloud {
                width: 350px; height: 120px;

                background: #FFF;
                background: linear-gradient(top, #FFF 100%);
                background: -webkit-linear-gradient(top, #FFF 100%);
                background: -moz-linear-gradient(top, #FFF 100%);
                background: -ms-linear-gradient(top, #FFF 100%);
                background: -o-linear-gradient(top, #FFF 100%);

                border-radius: 100px;
                -webkit-border-radius: 100px;
                -moz-border-radius: 100px;

                position: absolute;
                margin: 120px auto 20px;
                z-index:-1;
                transition: ease 1s;
            }

            .cloud:after, .cloud:before {
                content: '';
                position: absolute;
                background: #FFF;
                z-index: -1
            }

            .cloud:after {
                width: 100px; height: 100px;
                top: -50px; left: 50px;

                border-radius: 100px;
                -webkit-border-radius: 100px;
                -moz-border-radius: 100px;
            }

            .cloud:before {
                width: 180px; height: 180px;
                top: -90px; right: 50px;

                border-radius: 200px;
                -webkit-border-radius: 200px;
                -moz-border-radius: 200px;
            }
            
            .x1 {
                top:-50px;
                left:100px;
                -webkit-transform: scale(0.3);
                -moz-transform: scale(0.3);
                transform: scale(0.3);
                opacity: 0.9;
                -webkit-animation: moveclouds 15s linear infinite;
                -moz-animation: moveclouds 15s linear infinite;
                -o-animation: moveclouds 15s linear infinite;
            }
            
            .x1_5{
                top:-80px;
                left:250px;
                -webkit-transform: scale(0.3);
                -moz-transform: scale(0.3);
                transform: scale(0.3);
                -webkit-animation: moveclouds 17s linear infinite;
                -moz-animation: moveclouds 17s linear infinite;
                -o-animation: moveclouds 17s linear infinite; 
            }

            .x2 {
                left: 250px;
                top:30px;
                -webkit-transform: scale(0.6);
                -moz-transform: scale(0.6);
                transform: scale(0.6);
                opacity: 0.6; 
                -webkit-animation: moveclouds 25s linear infinite;
                -moz-animation: moveclouds 25s linear infinite;
                -o-animation: moveclouds 25s linear infinite;
            }

            .x3 {
                left: 250px; bottom: -70px;

                -webkit-transform: scale(0.6);
                -moz-transform: scale(0.6);
                transform: scale(0.6);
                opacity: 0.8; 

                -webkit-animation: moveclouds 25s linear infinite;
                -moz-animation: moveclouds 25s linear infinite;
                -o-animation: moveclouds 25s linear infinite;
            }

            .x4 {
                left: 470px; botttom: 20px;

                -webkit-transform: scale(0.75);
                -moz-transform: scale(0.75);
                transform: scale(0.75);
                opacity: 0.75;

                -webkit-animation: moveclouds 18s linear infinite;
                -moz-animation: moveclouds 18s linear infinite;
                -o-animation: moveclouds 18s linear infinite;
            }

            .x5 {
                left: 200px; top: 300px;

                -webkit-transform: scale(0.5);
                -moz-transform: scale(0.5);
                transform: scale(0.5);
                opacity: 0.8; 

                -webkit-animation: moveclouds 20s linear infinite;
                -moz-animation: moveclouds 20s linear infinite;
                -o-animation: moveclouds 20s linear infinite;
            }

            @-webkit-keyframes moveclouds {
                0% {margin-left: 1000px;}
                100% {margin-left: -1000px;}
            }
            @-moz-keyframes moveclouds {
                0% {margin-left: 1000px;}
                100% {margin-left: -1000px;}
            }
            @-o-keyframes moveclouds {
                0% {margin-left: 1000px;}
                100% {margin-left: -1000px;}
            }

Démonstration:

See the Pen Pure CSS 404 Error Page by SQFreaKz (@sqfreakz) on CodePen.