# Returned mail 404 > An airmail envelope with a wax seal and a return to sender stamp; open it and a letter explains no page 404 lives here. - Category: [404](https://library.aimran.es/components/404) - Built with: HTML + CSS - Live editor: https://library.aimran.es/blocks/404-mail - Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham ## Where to use it This error page treats a broken link like a letter that could not be delivered. A kraft envelope with an airmail striped border is closed with a red wax seal stamped 404, a rubber stamp lands on it saying return to sender, and a yellow sticker reports an unknown recipient. The envelope is a button: click it or press Enter and the flap folds back in 3D while a handwritten letter from the postman slides out. It gives a small nudge now and then to invite a click. Adjust the red accent and link the button home. ## Code ### HTML ```html 404 · Page not found
Registered mail

This address doesn't exist.

The postman rang twice and nobody answered at page 404. Check the address or go back home.

Back to home
``` ### CSS ```css .n4-mail { --accent: #d62828; --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-mail *,.n4-mail *::before,.n4-mail *::after { box-sizing: border-box; } .n4-mail .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-mail .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-mail .n4-sub { margin: 0; max-width: 34em; font-size: clamp(13px,2.4cqmin,18px); color: #a1a1a6; text-wrap: balance; } .n4-mail .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-mail .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-mail .n4-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 32px -10px var(--accent); } .n4-mail .n4-cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; } .n4-mail .n4-stars,.n4-mail .n4-stars2 { position: absolute; inset: -4%; pointer-events: none; } .n4-mail .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-mail-tw calc(5s / var(--k)) ease-in-out infinite alternate; } .n4-mail .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-mail-tw calc(7s / var(--k)) ease-in-out infinite alternate-reverse; } .n4-mail [data-depth] { transition: transform .9s cubic-bezier(.2,.7,.2,1); } @keyframes n4-mail-tw { from { opacity: .3; } } @keyframes n4-mail-spin { to { transform: rotate(1turn); } } @keyframes n4-mail-fade { from { opacity: 0; transform: translateY(10px); } } @media (prefers-reduced-motion:reduce) { .n4-mail *,.n4-mail *::before,.n4-mail *::after { animation: none!important; transition: none!important; } } .n4-mail { background: radial-gradient(70% 60% at 50% 30%,#fbf5ea,#e9d8bc 75%); color: #2b2118; } .n4-mail .n4-env { position: relative; display: block; width: 30em; height: 19em; font-size: min(1.9cqmin,13px); margin: 3em 0 1.8cqmin; padding: 0; border: 0; background: none; color: inherit; cursor: pointer; perspective: 60em; transition: transform .3s cubic-bezier(.3,1.4,.5,1); animation: n4-mail-nudge calc(4s / var(--k)) ease-in-out 1.6s infinite; } .n4-mail .n4-env:hover { transform: translateY(-.3em) rotate(-1deg); } .n4-mail .n4-env:active { transform: scale(.98); } .n4-mail .n4-env:focus-visible { outline: 2px solid var(--accent); outline-offset: .5em; border-radius: .4em; } .n4-mail .n4-env[aria-expanded="true"] { animation: none; } .n4-mail .n4-back,.n4-mail .n4-front,.n4-mail .n4-flap { position: absolute; inset: 0; border-radius: .4em; } .n4-mail .n4-back { background: #b8925f; box-shadow: 0 1.4em 2em -1em rgba(60,40,15,.5); } .n4-mail .n4-env .n4-letter { position: absolute; z-index: 1; left: 1.4em; right: 1.4em; top: .9em; bottom: .8em; display: grid; align-content: start; gap: .5em; padding: 1.1em 1.3em; text-align: left; background: repeating-linear-gradient(#fffdf6 0 1.6em,#e9e2d0 1.6em calc(1.6em + 1px)),#fffdf6; color: #2b2118; font: 400 1.1em/1.45 "Segoe Print","Bradley Hand","Chalkboard SE","Comic Sans MS",cursive; box-shadow: 0 .2em .4em rgba(0,0,0,.15); transition: transform calc(.6s / var(--k)) cubic-bezier(.3,1.2,.5,1); } .n4-mail .n4-letter b { font-weight: 700; } .n4-mail .n4-letter em { justify-self: end; font-style: normal; } .n4-mail .n4-env[aria-expanded="true"] .n4-letter { transform: translateY(-62%); transition-delay: calc(.35s / var(--k)); } .n4-mail .n4-front { z-index: 2; background: linear-gradient(160deg,#e4c899,#d3ae79); clip-path: polygon(0 0,50% 54%,100% 0,100% 100%,0 100%); border: .5em solid transparent; border-image: repeating-linear-gradient(-45deg,#d62828 0 .9em,#fdfaf3 .9em 1.8em,#1d4e89 1.8em 2.7em,#fdfaf3 2.7em 3.6em) 12; } .n4-mail .n4-flap { z-index: 3; transform-origin: 50% 0; clip-path: polygon(0 0,100% 0,50% 58%); background: linear-gradient(#dcbd8f,#c9a676); transition: transform calc(.5s / var(--k)) cubic-bezier(.5,0,.3,1),z-index 0s calc(.25s / var(--k)); } .n4-mail .n4-env[aria-expanded="true"] .n4-flap { transform: rotateX(180deg); z-index: 0; } .n4-mail .n4-seal { position: absolute; z-index: 4; left: 50%; top: 58%; display: grid; place-items: center; width: 3.6em; height: 3.6em; translate: -50% -50%; border-radius: 46% 54% 50% 50%/52% 48% 52% 48%; background: radial-gradient(circle at 38% 32%,#e05a5a,#a4161a 60%,#7a0f12); box-shadow: 0 .15em .3em rgba(0,0,0,.35),inset 0 0 0 .4em rgba(0,0,0,.12); color: rgba(255,215,215,.85); font: 800 .85em/1 ui-monospace,"SF Mono",Menlo,Consolas,monospace; transition: transform .3s,opacity .3s; } .n4-mail .n4-env[aria-expanded="true"] .n4-seal { transform: scale(.3) rotate(40deg); opacity: 0; } .n4-mail .n4-stamp { position: absolute; z-index: 4; left: 5%; bottom: 24%; padding: .4em .7em; border: .24em double #c1121f; border-radius: .3em; color: #c1121f; font: 800 .85em/1.1 "Helvetica Neue",Helvetica,Arial,system-ui,sans-serif; letter-spacing: .08em; text-transform: uppercase; rotate: -9deg; opacity: .85; mix-blend-mode: multiply; animation: n4-mail-thump calc(.5s / var(--k)) cubic-bezier(.3,1.6,.5,1) .5s both; } .n4-mail .n4-lbl { position: absolute; z-index: 4; right: 6%; bottom: 9%; padding: .45em .6em; background: #ffe066; color: #3d2c00; font: 700 .8em/1.2 ui-monospace,"SF Mono",Menlo,Consolas,monospace; rotate: 3deg; box-shadow: 0 .1em .2em rgba(0,0,0,.2); } .n4-mail .n4-tag { color: var(--accent); } .n4-mail .n4-title { font-size: clamp(20px,5cqmin,42px); font-weight: 700; letter-spacing: -.025em; } .n4-mail .n4-sub { color: #6b5a48; } .n4-mail .n4-cta { background: var(--accent); color: #fff; } @keyframes n4-mail-nudge { 0%,88%,100% { rotate: 0deg; } 91% { rotate: -2deg; } 94% { rotate: 2deg; } 97% { rotate: -1deg; } } @keyframes n4-mail-thump { from { transform: scale(2.4); opacity: 0; } } ``` ### JavaScript ```js document.querySelectorAll(".n4-mail").forEach((el) => { const env = el.querySelector(".n4-env"); env.addEventListener("click", () => env.setAttribute("aria-expanded", String(env.getAttribute("aria-expanded") !== "true"))); }); ``` ### React ```tsx // @ts-nocheck: setup() es JavaScript del DOM sin tipos. import { useEffect, useRef } from "react"; const css = ` .n4-mail { --accent: #d62828; --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-mail *,.n4-mail *::before,.n4-mail *::after { box-sizing: border-box; } .n4-mail .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-mail .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-mail .n4-sub { margin: 0; max-width: 34em; font-size: clamp(13px,2.4cqmin,18px); color: #a1a1a6; text-wrap: balance; } .n4-mail .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-mail .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-mail .n4-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 32px -10px var(--accent); } .n4-mail .n4-cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; } .n4-mail .n4-stars,.n4-mail .n4-stars2 { position: absolute; inset: -4%; pointer-events: none; } .n4-mail .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-mail-tw calc(5s / var(--k)) ease-in-out infinite alternate; } .n4-mail .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-mail-tw calc(7s / var(--k)) ease-in-out infinite alternate-reverse; } .n4-mail [data-depth] { transition: transform .9s cubic-bezier(.2,.7,.2,1); } @keyframes n4-mail-tw { from { opacity: .3; } } @keyframes n4-mail-spin { to { transform: rotate(1turn); } } @keyframes n4-mail-fade { from { opacity: 0; transform: translateY(10px); } } @media (prefers-reduced-motion:reduce) { .n4-mail *,.n4-mail *::before,.n4-mail *::after { animation: none!important; transition: none!important; } } .n4-mail { background: radial-gradient(70% 60% at 50% 30%,#fbf5ea,#e9d8bc 75%); color: #2b2118; } .n4-mail .n4-env { position: relative; display: block; width: 30em; height: 19em; font-size: min(1.9cqmin,13px); margin: 3em 0 1.8cqmin; padding: 0; border: 0; background: none; color: inherit; cursor: pointer; perspective: 60em; transition: transform .3s cubic-bezier(.3,1.4,.5,1); animation: n4-mail-nudge calc(4s / var(--k)) ease-in-out 1.6s infinite; } .n4-mail .n4-env:hover { transform: translateY(-.3em) rotate(-1deg); } .n4-mail .n4-env:active { transform: scale(.98); } .n4-mail .n4-env:focus-visible { outline: 2px solid var(--accent); outline-offset: .5em; border-radius: .4em; } .n4-mail .n4-env[aria-expanded="true"] { animation: none; } .n4-mail .n4-back,.n4-mail .n4-front,.n4-mail .n4-flap { position: absolute; inset: 0; border-radius: .4em; } .n4-mail .n4-back { background: #b8925f; box-shadow: 0 1.4em 2em -1em rgba(60,40,15,.5); } .n4-mail .n4-env .n4-letter { position: absolute; z-index: 1; left: 1.4em; right: 1.4em; top: .9em; bottom: .8em; display: grid; align-content: start; gap: .5em; padding: 1.1em 1.3em; text-align: left; background: repeating-linear-gradient(#fffdf6 0 1.6em,#e9e2d0 1.6em calc(1.6em + 1px)),#fffdf6; color: #2b2118; font: 400 1.1em/1.45 "Segoe Print","Bradley Hand","Chalkboard SE","Comic Sans MS",cursive; box-shadow: 0 .2em .4em rgba(0,0,0,.15); transition: transform calc(.6s / var(--k)) cubic-bezier(.3,1.2,.5,1); } .n4-mail .n4-letter b { font-weight: 700; } .n4-mail .n4-letter em { justify-self: end; font-style: normal; } .n4-mail .n4-env[aria-expanded="true"] .n4-letter { transform: translateY(-62%); transition-delay: calc(.35s / var(--k)); } .n4-mail .n4-front { z-index: 2; background: linear-gradient(160deg,#e4c899,#d3ae79); clip-path: polygon(0 0,50% 54%,100% 0,100% 100%,0 100%); border: .5em solid transparent; border-image: repeating-linear-gradient(-45deg,#d62828 0 .9em,#fdfaf3 .9em 1.8em,#1d4e89 1.8em 2.7em,#fdfaf3 2.7em 3.6em) 12; } .n4-mail .n4-flap { z-index: 3; transform-origin: 50% 0; clip-path: polygon(0 0,100% 0,50% 58%); background: linear-gradient(#dcbd8f,#c9a676); transition: transform calc(.5s / var(--k)) cubic-bezier(.5,0,.3,1),z-index 0s calc(.25s / var(--k)); } .n4-mail .n4-env[aria-expanded="true"] .n4-flap { transform: rotateX(180deg); z-index: 0; } .n4-mail .n4-seal { position: absolute; z-index: 4; left: 50%; top: 58%; display: grid; place-items: center; width: 3.6em; height: 3.6em; translate: -50% -50%; border-radius: 46% 54% 50% 50%/52% 48% 52% 48%; background: radial-gradient(circle at 38% 32%,#e05a5a,#a4161a 60%,#7a0f12); box-shadow: 0 .15em .3em rgba(0,0,0,.35),inset 0 0 0 .4em rgba(0,0,0,.12); color: rgba(255,215,215,.85); font: 800 .85em/1 ui-monospace,"SF Mono",Menlo,Consolas,monospace; transition: transform .3s,opacity .3s; } .n4-mail .n4-env[aria-expanded="true"] .n4-seal { transform: scale(.3) rotate(40deg); opacity: 0; } .n4-mail .n4-stamp { position: absolute; z-index: 4; left: 5%; bottom: 24%; padding: .4em .7em; border: .24em double #c1121f; border-radius: .3em; color: #c1121f; font: 800 .85em/1.1 "Helvetica Neue",Helvetica,Arial,system-ui,sans-serif; letter-spacing: .08em; text-transform: uppercase; rotate: -9deg; opacity: .85; mix-blend-mode: multiply; animation: n4-mail-thump calc(.5s / var(--k)) cubic-bezier(.3,1.6,.5,1) .5s both; } .n4-mail .n4-lbl { position: absolute; z-index: 4; right: 6%; bottom: 9%; padding: .45em .6em; background: #ffe066; color: #3d2c00; font: 700 .8em/1.2 ui-monospace,"SF Mono",Menlo,Consolas,monospace; rotate: 3deg; box-shadow: 0 .1em .2em rgba(0,0,0,.2); } .n4-mail .n4-tag { color: var(--accent); } .n4-mail .n4-title { font-size: clamp(20px,5cqmin,42px); font-weight: 700; letter-spacing: -.025em; } .n4-mail .n4-sub { color: #6b5a48; } .n4-mail .n4-cta { background: var(--accent); color: #fff; } @keyframes n4-mail-nudge { 0%,88%,100% { rotate: 0deg; } 91% { rotate: -2deg; } 94% { rotate: 2deg; } 97% { rotate: -1deg; } } @keyframes n4-mail-thump { from { transform: scale(2.4); opacity: 0; } } `; // Parallax con el puntero: JavaScript del DOM, el mismo de la pestaña JS. // eslint-disable-next-line @typescript-eslint/no-explicit-any function setup(el: any) { const env = el.querySelector(".n4-env"); env.addEventListener("click", () => env.setAttribute("aria-expanded", String(env.getAttribute("aria-expanded") !== "true"))); } export default function NotFoundMail() { const ref = useRef(null); useEffect(() => { const el = ref.current?.firstElementChild; return el ? setup(el) : undefined; }, []); return ( <>
Registered mail

This address doesn't exist.

The postman rang twice and nobody answered at page 404. Check the address or go back home.

Back to home
); } ``` ## Prompt for AI assistants Paste this into ChatGPT, Claude, Cursor, v0 or Lovable to adapt the block to your stack (Tailwind, Vue, Svelte…): ````text I want to add the “Returned mail 404” block (404) from AIMRAN Library to my project. ## What it is An airmail envelope with a wax seal and a return to sender stamp; open it and a letter explains no page 404 lives here. ## Chosen settings - Accent color: #d62828 - Speed: 1x (from 0.5 to 2x) - Title: "Esta dirección no existe." - Message: "El cartero ha llamado dos veces y nadie abre en la página 404. Comprueba la dirección o vuelve al inicio." - Button: "Volver al inicio" ## What I need 1. Add it to my project with the same look and animation as the reference code: same sizes, colours, radii, shadows, timings and easing. 2. It is built with plain HTML and CSS (the reference wraps it in a React component with its CSS). If my project uses something else (Vue, Svelte, Astro, plain HTML…), translate it without losing any behaviour. If I use Tailwind, turn the styles into classes; if not, keep the CSS in its own file. 3. Expose the settings above as props (or CSS variables) with those values as defaults. 4. Make it work well on phones: nothing that depends only on hover, touch targets of at least 44 px and no overflow on 320 px screens. 5. Make it look right in light and dark mode. 6. Keep it accessible: semantic HTML, roles and aria-* where needed, visible focus and keyboard support. 7. Respect prefers-reduced-motion: with reduced motion, no big animations but the same end result. ## Reference code ```tsx // @ts-nocheck: setup() es JavaScript del DOM sin tipos. import { useEffect, useRef } from "react"; const css = ` .n4-mail { --accent: #d62828; --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-mail *,.n4-mail *::before,.n4-mail *::after { box-sizing: border-box; } .n4-mail .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-mail .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-mail .n4-sub { margin: 0; max-width: 34em; font-size: clamp(13px,2.4cqmin,18px); color: #a1a1a6; text-wrap: balance; } .n4-mail .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-mail .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-mail .n4-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 32px -10px var(--accent); } .n4-mail .n4-cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; } .n4-mail .n4-stars,.n4-mail .n4-stars2 { position: absolute; inset: -4%; pointer-events: none; } .n4-mail .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-mail-tw calc(5s / var(--k)) ease-in-out infinite alternate; } .n4-mail .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-mail-tw calc(7s / var(--k)) ease-in-out infinite alternate-reverse; } .n4-mail [data-depth] { transition: transform .9s cubic-bezier(.2,.7,.2,1); } @keyframes n4-mail-tw { from { opacity: .3; } } @keyframes n4-mail-spin { to { transform: rotate(1turn); } } @keyframes n4-mail-fade { from { opacity: 0; transform: translateY(10px); } } @media (prefers-reduced-motion:reduce) { .n4-mail *,.n4-mail *::before,.n4-mail *::after { animation: none!important; transition: none!important; } } .n4-mail { background: radial-gradient(70% 60% at 50% 30%,#fbf5ea,#e9d8bc 75%); color: #2b2118; } .n4-mail .n4-env { position: relative; display: block; width: 30em; height: 19em; font-size: min(1.9cqmin,13px); margin: 3em 0 1.8cqmin; padding: 0; border: 0; background: none; color: inherit; cursor: pointer; perspective: 60em; transition: transform .3s cubic-bezier(.3,1.4,.5,1); animation: n4-mail-nudge calc(4s / var(--k)) ease-in-out 1.6s infinite; } .n4-mail .n4-env:hover { transform: translateY(-.3em) rotate(-1deg); } .n4-mail .n4-env:active { transform: scale(.98); } .n4-mail .n4-env:focus-visible { outline: 2px solid var(--accent); outline-offset: .5em; border-radius: .4em; } .n4-mail .n4-env[aria-expanded="true"] { animation: none; } .n4-mail .n4-back,.n4-mail .n4-front,.n4-mail .n4-flap { position: absolute; inset: 0; border-radius: .4em; } .n4-mail .n4-back { background: #b8925f; box-shadow: 0 1.4em 2em -1em rgba(60,40,15,.5); } .n4-mail .n4-env .n4-letter { position: absolute; z-index: 1; left: 1.4em; right: 1.4em; top: .9em; bottom: .8em; display: grid; align-content: start; gap: .5em; padding: 1.1em 1.3em; text-align: left; background: repeating-linear-gradient(#fffdf6 0 1.6em,#e9e2d0 1.6em calc(1.6em + 1px)),#fffdf6; color: #2b2118; font: 400 1.1em/1.45 "Segoe Print","Bradley Hand","Chalkboard SE","Comic Sans MS",cursive; box-shadow: 0 .2em .4em rgba(0,0,0,.15); transition: transform calc(.6s / var(--k)) cubic-bezier(.3,1.2,.5,1); } .n4-mail .n4-letter b { font-weight: 700; } .n4-mail .n4-letter em { justify-self: end; font-style: normal; } .n4-mail .n4-env[aria-expanded="true"] .n4-letter { transform: translateY(-62%); transition-delay: calc(.35s / var(--k)); } .n4-mail .n4-front { z-index: 2; background: linear-gradient(160deg,#e4c899,#d3ae79); clip-path: polygon(0 0,50% 54%,100% 0,100% 100%,0 100%); border: .5em solid transparent; border-image: repeating-linear-gradient(-45deg,#d62828 0 .9em,#fdfaf3 .9em 1.8em,#1d4e89 1.8em 2.7em,#fdfaf3 2.7em 3.6em) 12; } .n4-mail .n4-flap { z-index: 3; transform-origin: 50% 0; clip-path: polygon(0 0,100% 0,50% 58%); background: linear-gradient(#dcbd8f,#c9a676); transition: transform calc(.5s / var(--k)) cubic-bezier(.5,0,.3,1),z-index 0s calc(.25s / var(--k)); } .n4-mail .n4-env[aria-expanded="true"] .n4-flap { transform: rotateX(180deg); z-index: 0; } .n4-mail .n4-seal { position: absolute; z-index: 4; left: 50%; top: 58%; display: grid; place-items: center; width: 3.6em; height: 3.6em; translate: -50% -50%; border-radius: 46% 54% 50% 50%/52% 48% 52% 48%; background: radial-gradient(circle at 38% 32%,#e05a5a,#a4161a 60%,#7a0f12); box-shadow: 0 .15em .3em rgba(0,0,0,.35),inset 0 0 0 .4em rgba(0,0,0,.12); color: rgba(255,215,215,.85); font: 800 .85em/1 ui-monospace,"SF Mono",Menlo,Consolas,monospace; transition: transform .3s,opacity .3s; } .n4-mail .n4-env[aria-expanded="true"] .n4-seal { transform: scale(.3) rotate(40deg); opacity: 0; } .n4-mail .n4-stamp { position: absolute; z-index: 4; left: 5%; bottom: 24%; padding: .4em .7em; border: .24em double #c1121f; border-radius: .3em; color: #c1121f; font: 800 .85em/1.1 "Helvetica Neue",Helvetica,Arial,system-ui,sans-serif; letter-spacing: .08em; text-transform: uppercase; rotate: -9deg; opacity: .85; mix-blend-mode: multiply; animation: n4-mail-thump calc(.5s / var(--k)) cubic-bezier(.3,1.6,.5,1) .5s both; } .n4-mail .n4-lbl { position: absolute; z-index: 4; right: 6%; bottom: 9%; padding: .45em .6em; background: #ffe066; color: #3d2c00; font: 700 .8em/1.2 ui-monospace,"SF Mono",Menlo,Consolas,monospace; rotate: 3deg; box-shadow: 0 .1em .2em rgba(0,0,0,.2); } .n4-mail .n4-tag { color: var(--accent); } .n4-mail .n4-title { font-size: clamp(20px,5cqmin,42px); font-weight: 700; letter-spacing: -.025em; } .n4-mail .n4-sub { color: #6b5a48; } .n4-mail .n4-cta { background: var(--accent); color: #fff; } @keyframes n4-mail-nudge { 0%,88%,100% { rotate: 0deg; } 91% { rotate: -2deg; } 94% { rotate: 2deg; } 97% { rotate: -1deg; } } @keyframes n4-mail-thump { from { transform: scale(2.4); opacity: 0; } } `; // Parallax con el puntero: JavaScript del DOM, el mismo de la pestaña JS. // eslint-disable-next-line @typescript-eslint/no-explicit-any function setup(el: any) { const env = el.querySelector(".n4-env"); env.addEventListener("click", () => env.setAttribute("aria-expanded", String(env.getAttribute("aria-expanded") !== "true"))); } export default function NotFoundMail() { const ref = useRef(null); useEffect(() => { const el = ref.current?.firstElementChild; return el ? setup(el) : undefined; }, []); return ( <>
Registered mail

This address doesn't exist.

The postman rang twice and nobody answered at page 404. Check the address or go back home.

Back to home
); } ``` Give me the complete final code, ready to paste, and tell me in one line where to put it in my project. ````