Houston, on a un problème.
Cette page est sortie de son orbite. On vous ramène à la base avant de manquer d’oxygène.
Retour à la baseHTML + CSS404
404 Houston
Le zéro est une Lune cratérisée autour de laquelle tourne un satellite. Les étoiles suivent la souris.
Réglages
1x
Code
<!doctype html>
<html lang="es">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="robots" content="noindex" />
<title>404 · Page introuvable</title>
<style>
body { margin: 0; background: #000; }
.n4-houston {
--accent: #9fc3ff;
--k: 1;
position: fixed;
inset: 0;
z-index: 0;
overflow: hidden;
container-type: size;
display: grid;
place-items: center;
background: #000;
color: #f5f5f7;
font-family: -apple-system,BlinkMacSystemFont,"SF Pro Display","Inter","Segoe UI",system-ui,sans-serif;
-webkit-font-smoothing: antialiased;
text-align: center;
line-height: 1.4;
}
.n4-houston *,.n4-houston *::before,.n4-houston *::after {
box-sizing: border-box;
}
.n4-houston .n4-copy {
position: relative;
z-index: 5;
display: flex;
flex-direction: column;
align-items: center;
gap: 1.6cqmin;
width: 100%;
max-width: 680px;
padding: 0 6cqw;
}
.n4-houston .n4-title {
margin: 0;
font-size: clamp(17px,4.2cqmin,36px);
font-weight: 600;
letter-spacing: -.02em;
line-height: 1.15;
text-wrap: balance;
}
.n4-houston .n4-sub {
margin: 0;
max-width: 34em;
font-size: clamp(13px,2.4cqmin,18px);
color: #a1a1a6;
text-wrap: balance;
}
.n4-houston .n4-tag {
font: 600 clamp(10px,1.9cqmin,13px)/1 ui-monospace,"SF Mono",Menlo,Consolas,monospace;
letter-spacing: .16em;
text-transform: uppercase;
color: var(--accent);
}
.n4-houston .n4-cta {
margin-top: 1.8cqmin;
display: inline-flex;
align-items: center;
gap: .5em;
padding: .85em 1.5em;
border-radius: 999px;
background: #f5f5f7;
color: #000;
font-size: clamp(13px,2.2cqmin,16px);
font-weight: 600;
text-decoration: none;
transition: transform .3s cubic-bezier(.25,.1,.25,1),box-shadow .3s cubic-bezier(.25,.1,.25,1);
}
.n4-houston .n4-cta:hover {
transform: translateY(-2px);
box-shadow: 0 12px 32px -10px var(--accent);
}
.n4-houston .n4-cta:focus-visible {
outline: 2px solid var(--accent);
outline-offset: 3px;
}
.n4-houston .n4-stars,.n4-houston .n4-stars2 {
position: absolute;
inset: -4%;
pointer-events: none;
}
.n4-houston .n4-stars {
background-image: radial-gradient(1px 1px at 8% 12%,#fff 60%,transparent),radial-gradient(1px 1px at 22% 68%,#fff 60%,transparent),radial-gradient(1.5px 1.5px at 35% 24%,#fff 60%,transparent),radial-gradient(1px 1px at 48% 82%,#fff 60%,transparent),radial-gradient(1px 1px at 57% 9%,#fff 60%,transparent),radial-gradient(1.5px 1.5px at 66% 44%,#fff 60%,transparent),radial-gradient(1px 1px at 74% 72%,#fff 60%,transparent),radial-gradient(1px 1px at 86% 18%,#fff 60%,transparent),radial-gradient(1.5px 1.5px at 93% 58%,#fff 60%,transparent),radial-gradient(1px 1px at 14% 42%,#fff 60%,transparent),radial-gradient(1px 1px at 40% 55%,#fff 60%,transparent),radial-gradient(1px 1px at 81% 90%,#fff 60%,transparent),radial-gradient(1px 1px at 4% 88%,#fff 60%,transparent),radial-gradient(1px 1px at 62% 30%,#fff 60%,transparent);
opacity: .75;
animation: n4-houston-tw calc(5s / var(--k)) ease-in-out infinite alternate;
}
.n4-houston .n4-stars2 {
background-image: radial-gradient(2px 2px at 18% 30%,rgba(255,255,255,.9) 50%,transparent),radial-gradient(1.5px 1.5px at 72% 20%,rgba(255,255,255,.8) 50%,transparent),radial-gradient(2px 2px at 30% 85%,rgba(255,255,255,.7) 50%,transparent),radial-gradient(1.5px 1.5px at 88% 70%,rgba(255,255,255,.8) 50%,transparent),radial-gradient(2px 2px at 52% 60%,rgba(255,255,255,.6) 50%,transparent),radial-gradient(1.5px 1.5px at 6% 55%,rgba(255,255,255,.8) 50%,transparent);
opacity: .55;
animation: n4-houston-tw calc(7s / var(--k)) ease-in-out infinite alternate-reverse;
}
.n4-houston [data-depth] {
transition: transform .9s cubic-bezier(.2,.7,.2,1);
}
@keyframes n4-houston-tw {
from {
opacity: .3;
}
}
@keyframes n4-houston-spin {
to {
transform: rotate(1turn);
}
}
@keyframes n4-houston-fade {
from {
opacity: 0;
transform: translateY(10px);
}
}
@media (prefers-reduced-motion:reduce) {
.n4-houston *,.n4-houston *::before,.n4-houston *::after {
animation: none!important;
transition: none!important;
}
}
.n4-houston {
background: radial-gradient(80% 60% at 50% 40%,#0a1020,#000 72%);
}
.n4-houston .n4-num {
margin: 0 0 1cqmin;
display: flex;
align-items: center;
font-size: clamp(84px,28cqmin,280px);
font-weight: 700;
letter-spacing: -.05em;
line-height: .9;
}
.n4-houston .n4-num b {
color: #f5f5f7;
text-shadow: 0 0 .2em color-mix(in srgb,var(--accent) 30%,transparent);
}
.n4-houston .n4-o {
position: relative;
isolation: isolate;
display: grid;
place-items: center;
width: .78em;
height: .78em;
margin: 0 .06em;
}
.n4-houston .n4-moon {
position: relative;
z-index: 1;
width: .72em;
height: .72em;
border-radius: 50%;
background: radial-gradient(circle at 30% 34%,rgba(0,0,0,.28) 0 .045em,transparent .05em),radial-gradient(circle at 64% 30%,rgba(0,0,0,.22) 0 .03em,transparent .035em),radial-gradient(circle at 55% 64%,rgba(0,0,0,.25) 0 .07em,transparent .075em),radial-gradient(circle at 26% 70%,rgba(0,0,0,.18) 0 .028em,transparent .033em),radial-gradient(circle at 78% 55%,rgba(0,0,0,.2) 0 .022em,transparent .027em),radial-gradient(ellipse 40% 30% at 40% 45%,rgba(0,0,0,.12),transparent 70%),radial-gradient(circle at 35% 30%,#f2f2f4,#c7c7cc 45%,#8e8e93 75%,#5a5a5f);
box-shadow: inset -.1em -.06em .14em rgba(0,0,0,.65),0 0 .35em rgba(255,255,255,.12);
}
.n4-houston .n4-orbit {
position: absolute;
left: 50%;
top: 50%;
width: 1.5em;
height: 1.5em;
margin: -.75em 0 0 -.75em;
transform: rotate(-16deg) scaleY(.32);
pointer-events: none;
z-index: 0;
animation: n4-houston-z calc(9s / var(--k)) linear infinite;
}
.n4-houston .n4-orbit::before {
content: "";
position: absolute;
inset: 0;
border-radius: 50%;
border: .008em solid rgba(255,255,255,.2);
}
.n4-houston .n4-sat {
position: absolute;
inset: 0;
animation: n4-houston-spin calc(9s / var(--k)) linear infinite;
}
.n4-houston .n4-sat::after {
content: "";
position: absolute;
left: 50%;
top: -.035em;
width: .07em;
height: .07em;
margin-left: -.035em;
border-radius: 50%;
background: #fff;
box-shadow: 0 0 .06em .02em #fff,0 0 .22em color-mix(in srgb,var(--accent) 90%,#fff);
}
.n4-houston .n4-copy>* {
animation: n4-houston-fade calc(1s / var(--k)) cubic-bezier(.2,.7,.2,1) both;
}
.n4-houston .n4-copy>:nth-child(2) {
animation-delay: calc(.15s / var(--k));
}
.n4-houston .n4-copy>:nth-child(3) {
animation-delay: calc(.3s / var(--k));
}
.n4-houston .n4-copy>:nth-child(4) {
animation-delay: calc(.45s / var(--k));
}
@keyframes n4-houston-z {
0%,24.9% {
z-index: 0;
}
25%,74.9% {
z-index: 3;
}
75%,100% {
z-index: 0;
}
}
</style>
</head>
<body>
<main class="n4-houston">
<div class="n4-stars" data-depth="10" aria-hidden="true"></div>
<div class="n4-stars2" data-depth="26" aria-hidden="true"></div>
<div class="n4-copy">
<p class="n4-num" aria-hidden="true">
<b>4</b>
<span class="n4-o" data-depth="-14"><span class="n4-moon"></span><span class="n4-orbit"><span class="n4-sat"></span></span></span>
<b>4</b>
</p>
<h1 class="n4-title">Houston, on a un problème.</h1>
<p class="n4-sub">Cette page est sortie de son orbite. On vous ramène à la base avant de manquer d’oxygène.</p>
<a class="n4-cta" href="/">Retour à la base</a>
</div>
</main>
<script>
document.querySelectorAll(".n4-houston").forEach((el) => {
const layers = el.querySelectorAll("[data-depth]");
const move = (e) => {
const r = el.getBoundingClientRect();
const x = (e.clientX - r.left) / r.width - 0.5;
const y = (e.clientY - r.top) / r.height - 0.5;
layers.forEach((l) => {
const d = Number(l.dataset.depth);
l.style.transform = `translate3d(${-x * d}px, ${-y * d}px, 0)`;
});
};
el.addEventListener("pointermove", move);
});
</script>
</body>
</html>
Prompt pour l’IA
Collez-le dans ChatGPT, Claude ou Cursor : le bloc sera adapté à votre projet avec ces réglages, même sans React.
Plus dans 404
Où l’utiliser
Une page 404 avec un peu d’humour montre que quelqu’un veille sur le site, même quand un lien est cassé. Le fameux « Houston, on a un problème » fait passer le message en une ligne, et le satellite en orbite occupe le regard pendant la lecture. Elle convient à une startup SaaS, une école de code ou un podcast scientifique.
Les étoiles bougent légèrement avec la souris pour donner de la profondeur ; sur mobile, elles restent simplement immobiles. Remplacez le bleu clair par la couleur de votre marque et gardez la phrase telle quelle, presque tout le monde la connaît.