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Lighthouse 404
A lighthouse sweeps the fog at night and its beam uncovers a giant 404 in the sky; with the pointer you steer the light.
Settings
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 not found</title>
<style>
body { margin: 0; background: #000; }
.n4-lighthouse {
--accent: #ffd56b;
--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-lighthouse *,.n4-lighthouse *::before,.n4-lighthouse *::after {
box-sizing: border-box;
}
.n4-lighthouse .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-lighthouse .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-lighthouse .n4-sub {
margin: 0;
max-width: 34em;
font-size: clamp(13px,2.4cqmin,18px);
color: #a1a1a6;
text-wrap: balance;
}
.n4-lighthouse .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-lighthouse .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-lighthouse .n4-cta:hover {
transform: translateY(-2px);
box-shadow: 0 12px 32px -10px var(--accent);
}
.n4-lighthouse .n4-cta:focus-visible {
outline: 2px solid var(--accent);
outline-offset: 3px;
}
.n4-lighthouse .n4-stars,.n4-lighthouse .n4-stars2 {
position: absolute;
inset: -4%;
pointer-events: none;
}
.n4-lighthouse .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-lighthouse-tw calc(5s / var(--k)) ease-in-out infinite alternate;
}
.n4-lighthouse .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-lighthouse-tw calc(7s / var(--k)) ease-in-out infinite alternate-reverse;
}
.n4-lighthouse [data-depth] {
transition: transform .9s cubic-bezier(.2,.7,.2,1);
}
@keyframes n4-lighthouse-tw {
from {
opacity: .3;
}
}
@keyframes n4-lighthouse-spin {
to {
transform: rotate(1turn);
}
}
@keyframes n4-lighthouse-fade {
from {
opacity: 0;
transform: translateY(10px);
}
}
@media (prefers-reduced-motion:reduce) {
.n4-lighthouse *,.n4-lighthouse *::before,.n4-lighthouse *::after {
animation: none!important;
transition: none!important;
}
}
.n4-lighthouse {
background: linear-gradient(#071720,#0f2f3d 46%,#16404f 56%,#06161d 56.2%,#020a0e);
color: #eaf4f7;
}
.n4-lighthouse .n4-sky {
position: absolute;
inset: 0;
overflow: hidden;
}
.n4-lighthouse .n4-big {
position: absolute;
left: 0;
right: 0;
top: 6%;
margin: 0;
display: grid;
justify-content: center;
font: 800 28cqmin/1 "Helvetica Neue",Helvetica,Arial,system-ui,sans-serif;
letter-spacing: -.06em;
}
.n4-lighthouse .n4-big span {
grid-area: 1/1;
}
.n4-lighthouse .n4-dim {
color: transparent;
-webkit-text-stroke: 1px rgba(234,244,247,.16);
}
.n4-lighthouse .n4-lit {
color: #fff3c9;
text-shadow: 0 0 3cqmin rgba(255,213,107,.6);
-webkit-mask: radial-gradient(circle 15cqmin at var(--mx,50%) var(--my,50%),#000 25%,transparent);
mask: radial-gradient(circle 15cqmin at var(--mx,50%) var(--my,50%),#000 25%,transparent);
}
.n4-lighthouse .n4-fog {
position: absolute;
left: -30%;
right: -30%;
top: 16%;
height: 40%;
background: radial-gradient(35% 45% at 30% 50%,rgba(160,195,205,.18),transparent 70%),radial-gradient(30% 40% at 72% 40%,rgba(160,195,205,.13),transparent 70%);
filter: blur(2cqmin);
animation: n4-lighthouse-drift calc(26s / var(--k)) ease-in-out infinite alternate;
}
.n4-lighthouse .n4-f2 {
top: 34%;
opacity: .8;
animation-duration: calc(34s / var(--k));
animation-direction: alternate-reverse;
}
.n4-lighthouse .n4-beam {
position: absolute;
left: var(--lx,82%);
top: var(--ly,30%);
width: 160cqmax;
height: 34cqmin;
margin-top: -17cqmin;
transform-origin: 0 50%;
rotate: var(--a,200deg);
clip-path: polygon(0 48.5%,100% 0,100% 100%,0 51.5%);
background: linear-gradient(90deg,rgba(255,230,160,.5),rgba(255,230,160,.12) 45%,transparent 80%);
mix-blend-mode: screen;
pointer-events: none;
}
.n4-lighthouse .n4-rock {
position: absolute;
right: 3%;
bottom: 43%;
width: 28cqmin;
height: 6cqmin;
border-radius: 50% 50% 0 0/100% 100% 0 0;
background: #08171d;
}
.n4-lighthouse .n4-tower {
position: absolute;
right: 11%;
bottom: 44%;
width: 6.5cqmin;
height: 26cqmin;
}
.n4-lighthouse .n4-body {
position: absolute;
inset: 0;
clip-path: polygon(24% 0,76% 0,100% 100%,0 100%);
background: linear-gradient(90deg,rgba(0,0,0,.4),transparent 45%,rgba(0,0,0,.3)),repeating-linear-gradient(#e9e4da 0 4.4cqmin,#b3261e 4.4cqmin 8.8cqmin);
}
.n4-lighthouse .n4-gal {
position: absolute;
left: -6%;
right: -6%;
top: -.8cqmin;
height: 1cqmin;
border-radius: .3cqmin;
background: #1d2428;
}
.n4-lighthouse .n4-lamp {
position: absolute;
left: 16%;
right: 16%;
bottom: calc(100% + .4cqmin);
height: 4cqmin;
border-radius: .4cqmin;
background: radial-gradient(circle,#fff8d6 0 30%,#ffd56b 55%,rgba(255,213,107,.35));
box-shadow: 0 0 4cqmin 1cqmin rgba(255,213,107,.5);
}
.n4-lighthouse .n4-lamp::before {
content: "";
position: absolute;
left: -22%;
right: -22%;
bottom: 100%;
height: 2.6cqmin;
clip-path: polygon(50% 0,100% 100%,0 100%);
background: #1d2428;
}
.n4-lighthouse .n4-sea {
position: absolute;
left: 0;
bottom: 41.5%;
width: 200%;
height: 5cqmin;
animation: n4-lighthouse-waves calc(10s / var(--k)) linear infinite;
}
.n4-lighthouse .n4-sea path {
fill: #06161d;
}
.n4-lighthouse .n4-copy {
position: absolute;
left: 0;
right: 0;
bottom: 5cqh;
margin: 0 auto;
}
.n4-lighthouse .n4-tag {
color: var(--accent);
}
.n4-lighthouse .n4-title {
font-size: clamp(20px,4.8cqmin,40px);
font-weight: 700;
letter-spacing: -.025em;
}
.n4-lighthouse .n4-sub {
color: #9fb6bf;
}
.n4-lighthouse .n4-cta {
background: var(--accent);
color: #1b1503;
}
@keyframes n4-lighthouse-drift {
to {
transform: translateX(12%);
}
}
@keyframes n4-lighthouse-waves {
to {
transform: translateX(-50%);
}
}
</style>
</head>
<body>
<main class="n4-lighthouse">
<div class="n4-sky" aria-hidden="true">
<p class="n4-big" translate="no"><span class="n4-dim">404</span><span class="n4-lit">404</span></p>
<i class="n4-fog"></i><i class="n4-fog n4-f2"></i>
<i class="n4-beam"></i>
<i class="n4-rock"></i>
<div class="n4-tower"><i class="n4-body"></i><i class="n4-gal"></i><i class="n4-lamp"></i></div>
<svg class="n4-sea" viewBox="0 0 800 40" preserveAspectRatio="none"><path d="M0 20Q50 6 100 20T200 20T300 20T400 20T500 20T600 20T700 20T800 20V40H0Z"/></svg>
</div>
<div class="n4-copy">
<span class="n4-tag">Heading 404</span>
<h1 class="n4-title">This page never reached port.</h1>
<p class="n4-sub">The lighthouse is searching for it in the fog, but it isn't on the chart. Head back to the harbor mouth and pick another course.</p>
<a class="n4-cta" href="/">Back to port</a>
</div>
</main>
<script>
document.querySelectorAll(".n4-lighthouse").forEach((el) => {
const sky = el.querySelector(".n4-sky");
const lamp = el.querySelector(".n4-lamp");
const lit = el.querySelector(".n4-lit");
const rm = matchMedia("(prefers-reduced-motion: reduce)").matches;
const k = parseFloat(getComputedStyle(el).getPropertyValue("--k")) || 1;
let px = 0, py = 0, until = 0, raf = 0, sx = -1, sy = 0;
const t0 = performance.now();
const frame = (t) => {
const r = el.getBoundingClientRect(), l = lamp.getBoundingClientRect(), b = lit.getBoundingClientRect();
const s = r.width / el.offsetWidth || 1;
const lx = (l.left + l.width / 2 - r.left) / s, ly = (l.top + l.height / 2 - r.top) / s;
const bx = (b.left - r.left) / s, by = (b.top - r.top) / s, bw = b.width / s, bh = b.height / s;
let tx = px, ty = py;
if (t > until) { tx = bx + bw * (0.5 + 0.6 * Math.sin(((t - t0) / 1000) * 0.7 * k)); ty = by + bh * 0.55; }
if (sx < 0 || rm) { sx = tx; sy = ty; }
sx += (tx - sx) * 0.08;
sy += (ty - sy) * 0.08;
sky.style.setProperty("--lx", lx.toFixed(1) + "px");
sky.style.setProperty("--ly", ly.toFixed(1) + "px");
sky.style.setProperty("--a", ((Math.atan2(sy - ly, sx - lx) * 180) / Math.PI).toFixed(2) + "deg");
lit.style.setProperty("--mx", (sx - bx).toFixed(1) + "px");
lit.style.setProperty("--my", (sy - by).toFixed(1) + "px");
if (!rm) raf = requestAnimationFrame(frame);
};
const move = (e) => {
const r = el.getBoundingClientRect();
const s = r.width / el.offsetWidth || 1;
px = (e.clientX - r.left) / s;
py = (e.clientY - r.top) / s;
until = performance.now() + 2500;
if (rm) frame(performance.now());
};
el.addEventListener("pointermove", move);
raf = requestAnimationFrame(frame);
});
</script>
</body>
</html>
Prompt for AI
Paste it into ChatGPT, Claude or Cursor and it will adapt the block to your project with these settings, even if you don’t use React.
More in 404
See all 404Where to use it
A full screen night scene for travel, sailing or harbor sites: a red and white lighthouse on the rocks, drifting fog, rolling waves and a huge outlined 404 in the sky. The beam sweeps back and forth on its own, and wherever it points the number lights up warm yellow through a soft mask.
Move the pointer and the beam follows it for a few seconds before going back to its sweep. The scene is decorative and hidden from screen readers, and reduced motion leaves the light fixed on the number. Adjust the yellow accent.