# CRT television toggle

> A seventies TV turns on like a cathode ray tube: a bright line, a flash and colour bars with scanlines.

- Category: [Toggles](https://library.aimran.es/components/toggles)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-tg-crt-tv
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

This switch is a small orange television from the seventies with a curved screen, side knobs, a speaker grille and a rabbit ear antenna. Turning it on plays the classic tube start: a thin bright line opens into the full picture, the flash fades and colour bars appear with scanlines, a slow rolling band and a slight flicker. Turning it off collapses the image back into a line.

The main color is the cabinet and the second one replaces one of the colour bars. A cream or wood cabinet gives another decade, and the effect works for media settings, screen modes or retro landing pages.

## Code

### HTML

```html
<label class="uvq03-crt"><input type="checkbox" role="switch"><span class="tv"><i class="an"></i><span class="bz"><span class="sc"><span class="im"></span></span><span class="kb"><i></i><i></i></span></span></span>Television</label>
```

### CSS

```css
.uvq03-crt {
  --c1: #e8742c;
  --c2: #3ad1d6;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uvq03-crt {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .8em;
  cursor: pointer;
  user-select: none;
  font-weight: 550;
}

.uvq03-crt input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  pointer-events: none;
}

.uvq03-crt .tv {
  position: relative;
  display: block;
  flex: none;
  box-sizing: border-box;
  width: 4.8em;
  height: 4em;
  padding-top: .8em;
}

.uvq03-crt .an {
  position: absolute;
  left: 50%;
  top: 0;
  width: 1.8em;
  height: .9em;
  margin-left: -.9em;
}

.uvq03-crt .an::before,.uvq03-crt .an::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: .07em;
  height: 1em;
  background: color-mix(in srgb,var(--fg) 60%,transparent);
  transform-origin: 50% 100%;
  transform: rotate(-30deg);
}

.uvq03-crt .an::after {
  transform: rotate(26deg);
}

.uvq03-crt .bz {
  position: relative;
  display: flex;
  gap: .3em;
  box-sizing: border-box;
  height: 100%;
  padding: .32em;
  border-radius: .6em;
  background: linear-gradient(180deg,color-mix(in srgb,var(--c1) 78%,#fff),var(--c1) 45%,color-mix(in srgb,var(--c1) 78%,#000));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.35),0 .55em 1em -.5em rgba(0,0,0,.55);
  transition: filter calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uvq03-crt .sc {
  position: relative;
  flex: 1;
  overflow: hidden;
  border-radius: 22%/28%;
  background: radial-gradient(circle,#2c3330,#121614);
  box-shadow: inset 0 0 .4em rgba(0,0,0,.85),0 0 0 .14em #1d1e20;
}

.uvq03-crt .sc::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  background: radial-gradient(120% 80% at 25% 15%,rgba(255,255,255,.24),transparent 45%);
  pointer-events: none;
}

.uvq03-crt .im {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg,rgba(0,0,0,.28) 0 1px,transparent 1px 3px),linear-gradient(90deg,#e9e9e9 0 14.3%,#f2d43a 0 28.6%,var(--c2) 0 42.9%,#3bc95a 0 57.1%,#d63ad1 0 71.4%,#e2433a 0 85.7%,#3a4ad6 0);
  opacity: 0;
  filter: brightness(3);
  transform: scaleY(.02);
  scale: 0 1;
  transition: transform calc(0.18s / var(--k)) cubic-bezier(.25,.1,.25,1),scale calc(0.15s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.16s / var(--k)),filter calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1),opacity calc(0.12s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.3s / var(--k));
}

.uvq03-crt .im::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -30%;
  height: 30%;
  background: linear-gradient(transparent,rgba(255,255,255,.14),transparent);
  animation: uvq03-crt-r calc(2.6s / var(--k)) linear infinite;
}

.uvq03-crt .kb {
  display: grid;
  align-content: start;
  gap: .25em;
  width: .6em;
}

.uvq03-crt .kb i {
  width: .56em;
  height: .56em;
  border-radius: 50%;
  background: linear-gradient(#2a2a2a,#2a2a2a) 50% 12%/.07em 38% no-repeat,radial-gradient(circle at 35% 35%,#f2f2f2,#6d6f75);
  box-shadow: 0 .05em .1em rgba(0,0,0,.45);
  transition: transform calc(0.4s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uvq03-crt .kb::after {
  content: "";
  height: 1em;
  border-radius: .1em;
  background: repeating-linear-gradient(180deg,rgba(0,0,0,.35) 0 .07em,transparent .07em .17em);
}

.uvq03-crt:hover .bz {
  filter: brightness(1.06);
}

.uvq03-crt:active .kb i:first-child {
  transform: scale(.85);
}

.uvq03-crt input:checked + .tv .kb i:first-child {
  transform: rotate(120deg);
}

.uvq03-crt input:checked + .tv .im {
  opacity: 1;
  filter: brightness(1);
  transform: none;
  scale: 1 1;
  transition: opacity 0s,scale calc(0.12s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.28s / var(--k)) cubic-bezier(.2,.8,.3,1) calc(0.12s / var(--k)),filter calc(0.45s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.3s / var(--k));
  animation: uvq03-crt calc(0.14s / var(--k)) steps(2) infinite calc(0.7s / var(--k));
}

@keyframes uvq03-crt {
  50% {
    opacity: .9;
  }
}

@keyframes uvq03-crt-r {
  to {
    top: 100%;
  }
}

.uvq03-crt input:focus-visible + .tv .bz {
  outline: 2px solid var(--c1);
  outline-offset: 3px;
}

@media (prefers-reduced-motion:reduce) {
  .uvq03-crt,.uvq03-crt *,.uvq03-crt *::before,.uvq03-crt *::after {
    animation-duration: .01ms!important;
    animation-iteration-count: 1!important;
    transition-duration: .01ms!important;
  }
}
```

### React

```tsx
import type { CSSProperties } from "react";

const css = `
.uvq03-crt {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .8em;
  cursor: pointer;
  user-select: none;
  font-weight: 550;
}

.uvq03-crt input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  pointer-events: none;
}

.uvq03-crt .tv {
  position: relative;
  display: block;
  flex: none;
  box-sizing: border-box;
  width: 4.8em;
  height: 4em;
  padding-top: .8em;
}

.uvq03-crt .an {
  position: absolute;
  left: 50%;
  top: 0;
  width: 1.8em;
  height: .9em;
  margin-left: -.9em;
}

.uvq03-crt .an::before,.uvq03-crt .an::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: .07em;
  height: 1em;
  background: color-mix(in srgb,var(--fg) 60%,transparent);
  transform-origin: 50% 100%;
  transform: rotate(-30deg);
}

.uvq03-crt .an::after {
  transform: rotate(26deg);
}

.uvq03-crt .bz {
  position: relative;
  display: flex;
  gap: .3em;
  box-sizing: border-box;
  height: 100%;
  padding: .32em;
  border-radius: .6em;
  background: linear-gradient(180deg,color-mix(in srgb,var(--c1) 78%,#fff),var(--c1) 45%,color-mix(in srgb,var(--c1) 78%,#000));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.35),0 .55em 1em -.5em rgba(0,0,0,.55);
  transition: filter calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uvq03-crt .sc {
  position: relative;
  flex: 1;
  overflow: hidden;
  border-radius: 22%/28%;
  background: radial-gradient(circle,#2c3330,#121614);
  box-shadow: inset 0 0 .4em rgba(0,0,0,.85),0 0 0 .14em #1d1e20;
}

.uvq03-crt .sc::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  background: radial-gradient(120% 80% at 25% 15%,rgba(255,255,255,.24),transparent 45%);
  pointer-events: none;
}

.uvq03-crt .im {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg,rgba(0,0,0,.28) 0 1px,transparent 1px 3px),linear-gradient(90deg,#e9e9e9 0 14.3%,#f2d43a 0 28.6%,var(--c2) 0 42.9%,#3bc95a 0 57.1%,#d63ad1 0 71.4%,#e2433a 0 85.7%,#3a4ad6 0);
  opacity: 0;
  filter: brightness(3);
  transform: scaleY(.02);
  scale: 0 1;
  transition: transform calc(0.18s / var(--k)) cubic-bezier(.25,.1,.25,1),scale calc(0.15s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.16s / var(--k)),filter calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1),opacity calc(0.12s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.3s / var(--k));
}

.uvq03-crt .im::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -30%;
  height: 30%;
  background: linear-gradient(transparent,rgba(255,255,255,.14),transparent);
  animation: uvq03-crt-r calc(2.6s / var(--k)) linear infinite;
}

.uvq03-crt .kb {
  display: grid;
  align-content: start;
  gap: .25em;
  width: .6em;
}

.uvq03-crt .kb i {
  width: .56em;
  height: .56em;
  border-radius: 50%;
  background: linear-gradient(#2a2a2a,#2a2a2a) 50% 12%/.07em 38% no-repeat,radial-gradient(circle at 35% 35%,#f2f2f2,#6d6f75);
  box-shadow: 0 .05em .1em rgba(0,0,0,.45);
  transition: transform calc(0.4s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uvq03-crt .kb::after {
  content: "";
  height: 1em;
  border-radius: .1em;
  background: repeating-linear-gradient(180deg,rgba(0,0,0,.35) 0 .07em,transparent .07em .17em);
}

.uvq03-crt:hover .bz {
  filter: brightness(1.06);
}

.uvq03-crt:active .kb i:first-child {
  transform: scale(.85);
}

.uvq03-crt input:checked + .tv .kb i:first-child {
  transform: rotate(120deg);
}

.uvq03-crt input:checked + .tv .im {
  opacity: 1;
  filter: brightness(1);
  transform: none;
  scale: 1 1;
  transition: opacity 0s,scale calc(0.12s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.28s / var(--k)) cubic-bezier(.2,.8,.3,1) calc(0.12s / var(--k)),filter calc(0.45s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.3s / var(--k));
  animation: uvq03-crt calc(0.14s / var(--k)) steps(2) infinite calc(0.7s / var(--k));
}

@keyframes uvq03-crt {
  50% {
    opacity: .9;
  }
}

@keyframes uvq03-crt-r {
  to {
    top: 100%;
  }
}

.uvq03-crt input:focus-visible + .tv .bz {
  outline: 2px solid var(--c1);
  outline-offset: 3px;
}

@media (prefers-reduced-motion:reduce) {
  .uvq03-crt,.uvq03-crt *,.uvq03-crt *::before,.uvq03-crt *::after {
    animation-duration: .01ms!important;
    animation-iteration-count: 1!important;
    transition-duration: .01ms!important;
  }
}
`;

export default function TgCrtTv() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#e8742c",
          "--c2": "#3ad1d6",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uvq03-crt"><input type="checkbox" role="switch" /><span className="tv"><i className="an"></i><span className="bz"><span className="sc"><span className="im"></span></span><span className="kb"><i></i><i></i></span></span></span>Television</label>
      </div>
    </>
  );
}
```

## 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 “CRT television toggle” block (Toggles) from AIMRAN Library to my project.

## What it is
A seventies TV turns on like a cathode ray tube: a bright line, a flash and colour bars with scanlines.

## Chosen settings
- Main color: #e8742c
- Secondary color: #3ad1d6
- Size: 16px (from 12 to 24px)
- Speed: 1x (from 0.5 to 2x)
- Text: "Televisor"

## 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
import type { CSSProperties } from "react";

const css = `
.uvq03-crt {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .8em;
  cursor: pointer;
  user-select: none;
  font-weight: 550;
}

.uvq03-crt input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  pointer-events: none;
}

.uvq03-crt .tv {
  position: relative;
  display: block;
  flex: none;
  box-sizing: border-box;
  width: 4.8em;
  height: 4em;
  padding-top: .8em;
}

.uvq03-crt .an {
  position: absolute;
  left: 50%;
  top: 0;
  width: 1.8em;
  height: .9em;
  margin-left: -.9em;
}

.uvq03-crt .an::before,.uvq03-crt .an::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: .07em;
  height: 1em;
  background: color-mix(in srgb,var(--fg) 60%,transparent);
  transform-origin: 50% 100%;
  transform: rotate(-30deg);
}

.uvq03-crt .an::after {
  transform: rotate(26deg);
}

.uvq03-crt .bz {
  position: relative;
  display: flex;
  gap: .3em;
  box-sizing: border-box;
  height: 100%;
  padding: .32em;
  border-radius: .6em;
  background: linear-gradient(180deg,color-mix(in srgb,var(--c1) 78%,#fff),var(--c1) 45%,color-mix(in srgb,var(--c1) 78%,#000));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.35),0 .55em 1em -.5em rgba(0,0,0,.55);
  transition: filter calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uvq03-crt .sc {
  position: relative;
  flex: 1;
  overflow: hidden;
  border-radius: 22%/28%;
  background: radial-gradient(circle,#2c3330,#121614);
  box-shadow: inset 0 0 .4em rgba(0,0,0,.85),0 0 0 .14em #1d1e20;
}

.uvq03-crt .sc::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  background: radial-gradient(120% 80% at 25% 15%,rgba(255,255,255,.24),transparent 45%);
  pointer-events: none;
}

.uvq03-crt .im {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg,rgba(0,0,0,.28) 0 1px,transparent 1px 3px),linear-gradient(90deg,#e9e9e9 0 14.3%,#f2d43a 0 28.6%,var(--c2) 0 42.9%,#3bc95a 0 57.1%,#d63ad1 0 71.4%,#e2433a 0 85.7%,#3a4ad6 0);
  opacity: 0;
  filter: brightness(3);
  transform: scaleY(.02);
  scale: 0 1;
  transition: transform calc(0.18s / var(--k)) cubic-bezier(.25,.1,.25,1),scale calc(0.15s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.16s / var(--k)),filter calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1),opacity calc(0.12s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.3s / var(--k));
}

.uvq03-crt .im::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -30%;
  height: 30%;
  background: linear-gradient(transparent,rgba(255,255,255,.14),transparent);
  animation: uvq03-crt-r calc(2.6s / var(--k)) linear infinite;
}

.uvq03-crt .kb {
  display: grid;
  align-content: start;
  gap: .25em;
  width: .6em;
}

.uvq03-crt .kb i {
  width: .56em;
  height: .56em;
  border-radius: 50%;
  background: linear-gradient(#2a2a2a,#2a2a2a) 50% 12%/.07em 38% no-repeat,radial-gradient(circle at 35% 35%,#f2f2f2,#6d6f75);
  box-shadow: 0 .05em .1em rgba(0,0,0,.45);
  transition: transform calc(0.4s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uvq03-crt .kb::after {
  content: "";
  height: 1em;
  border-radius: .1em;
  background: repeating-linear-gradient(180deg,rgba(0,0,0,.35) 0 .07em,transparent .07em .17em);
}

.uvq03-crt:hover .bz {
  filter: brightness(1.06);
}

.uvq03-crt:active .kb i:first-child {
  transform: scale(.85);
}

.uvq03-crt input:checked + .tv .kb i:first-child {
  transform: rotate(120deg);
}

.uvq03-crt input:checked + .tv .im {
  opacity: 1;
  filter: brightness(1);
  transform: none;
  scale: 1 1;
  transition: opacity 0s,scale calc(0.12s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.28s / var(--k)) cubic-bezier(.2,.8,.3,1) calc(0.12s / var(--k)),filter calc(0.45s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.3s / var(--k));
  animation: uvq03-crt calc(0.14s / var(--k)) steps(2) infinite calc(0.7s / var(--k));
}

@keyframes uvq03-crt {
  50% {
    opacity: .9;
  }
}

@keyframes uvq03-crt-r {
  to {
    top: 100%;
  }
}

.uvq03-crt input:focus-visible + .tv .bz {
  outline: 2px solid var(--c1);
  outline-offset: 3px;
}

@media (prefers-reduced-motion:reduce) {
  .uvq03-crt,.uvq03-crt *,.uvq03-crt *::before,.uvq03-crt *::after {
    animation-duration: .01ms!important;
    animation-iteration-count: 1!important;
    transition-duration: .01ms!important;
  }
}
`;

export default function TgCrtTv() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#e8742c",
          "--c2": "#3ad1d6",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uvq03-crt"><input type="checkbox" role="switch" /><span className="tv"><i className="an"></i><span className="bz"><span className="sc"><span className="im"></span></span><span className="kb"><i></i><i></i></span></span></span>Television</label>
      </div>
    </>
  );
}
```

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