# Country filter with flags

> A country list with flag emojis and a search field inside the menu to jump straight to one.

- Category: [Filters](https://library.aimran.es/components/filters)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-f-dd-country
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

Flags make a long list easy to scan, since people spot their own flag before they read the name. It suits a tour operator filtering trips by destination, a language school listing where its courses run, or a directory of suppliers by country. The built-in search saves scrolling past fifty entries. Also known as a country picker.

Flag emojis look different on each system, and some Windows versions show letters instead. If that matters for your audience, swap them for small SVG flags. Write the country names in the visitor's language, not in English only.

## Code

### HTML

```html
<div class="uv-fcn"><button class="tg"><b>🌍 All countries</b><i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round"><path d="M6 9l6 6 6-6"/></svg></i></button><div class="mn"><label class="sb"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round"><circle cx="11" cy="11" r="7"/><path d="M20 20l-4.3-4.3"/></svg><input placeholder="Search country"></label><div class="ls"><button data-v="🇪🇸 Spain">🇪🇸 Spain</button><button data-v="🇫🇷 Francia">🇫🇷 Francia</button><button data-v="🇩🇪 Alemania">🇩🇪 Alemania</button><button data-v="🇮🇹 Italia">🇮🇹 Italia</button><button data-v="🇵🇹 Portugal">🇵🇹 Portugal</button><button data-v="🇲🇦 Marruecos">🇲🇦 Marruecos</button><button data-v="🇲🇽 Mexico">🇲🇽 Mexico</button><button data-v="🇯🇵 Japan">🇯🇵 Japan</button></div></div></div>
```

### CSS

```css
.uv-fcn {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-fcn {
  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-block;
}

.uv-fcn .tg {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 550;
  line-height: 1;
  padding: .72em 1.25em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  position: relative;
  transition: color calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  display: inline-flex;
  align-items: center;
  gap: .6em;
  background: var(--bg);
  box-shadow: inset 0 0 0 1.5px color-mix(in srgb,var(--fg) 13%,transparent);
}

.uv-fcn .tg:hover {
  color: var(--c1);
  box-shadow: inset 0 0 0 1.5px var(--c1);
}

.uv-fcn .tg svg {
  width: 1em;
  height: 1em;
}

.uv-fcn .tg i {
  display: grid;
  place-items: center;
  transition: transform calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fcn.open .tg i {
  transform: rotate(180deg);
}

.uv-fcn .mn {
  position: absolute;
  top: calc(100% + .45em);
  left: 0;
  width: 14em;
  padding: .5em;
  border-radius: 1em;
  background: var(--bg);
  box-shadow: 0 18px 40px rgba(0,0,0,.16);
  transform-origin: top left;
  scale: .94;
  opacity: 0;
  pointer-events: none;
  transition: scale calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1),opacity calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1);
  z-index: 3;
}

.uv-fcn.open .mn {
  scale: 1;
  opacity: 1;
  pointer-events: auto;
}

.uv-fcn .sb {
  display: flex;
  align-items: center;
  gap: .5em;
  padding: .5em .8em;
  border-radius: 999px;
  background: color-mix(in srgb,var(--fg) 7%,transparent);
}

.uv-fcn .sb svg {
  width: 1em;
  height: 1em;
  opacity: .5;
  flex: 0 0 auto;
}

.uv-fcn .sb input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: none;
  color: var(--fg);
  font-size: calc(var(--s) * .9);
}

.uv-fcn .ls {
  display: flex;
  flex-direction: column;
  max-height: 11em;
  overflow: auto;
  margin-top: .4em;
}

.uv-fcn .ls button {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 550;
  line-height: 1;
  padding: .72em 1.25em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  position: relative;
  transition: color calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  text-align: left;
  border-radius: .6em;
  padding: .5em .8em;
  font-weight: 500;
}

.uv-fcn .ls button:hover {
  background: color-mix(in srgb,var(--c1) 10%,transparent);
  transform: translateX(3px);
}

.uv-fcn .ls button.hide {
  display: none;
}
```

### JavaScript

```js
document.querySelectorAll(".uv-fcn").forEach(el => {
  const tg=el.querySelector(".tg"),lb=el.querySelector(".tg b"),ip=el.querySelector("input");tg.addEventListener("click",e=>{e.stopPropagation();el.classList.toggle("open");if(el.classList.contains("open"))setTimeout(()=>ip.focus(),80)});ip.addEventListener("input",()=>{const q=ip.value.trim().toLowerCase();el.querySelectorAll(".ls button").forEach(b=>b.classList.toggle("hide",!b.dataset.v.toLowerCase().includes(q)))});el.querySelectorAll(".ls button").forEach(b=>b.addEventListener("click",()=>{lb.textContent=b.dataset.v;el.classList.remove("open")}));document.addEventListener("click",e=>{if(!el.contains(e.target))el.classList.remove("open")})
});
```

### React

```tsx
// @ts-nocheck: setup() es JavaScript del DOM sin tipos, el mismo de la pestaña JS.
import { useEffect, useRef, type CSSProperties } from "react";

const css = `
.uv-fcn {
  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-block;
}

.uv-fcn .tg {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 550;
  line-height: 1;
  padding: .72em 1.25em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  position: relative;
  transition: color calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  display: inline-flex;
  align-items: center;
  gap: .6em;
  background: var(--bg);
  box-shadow: inset 0 0 0 1.5px color-mix(in srgb,var(--fg) 13%,transparent);
}

.uv-fcn .tg:hover {
  color: var(--c1);
  box-shadow: inset 0 0 0 1.5px var(--c1);
}

.uv-fcn .tg svg {
  width: 1em;
  height: 1em;
}

.uv-fcn .tg i {
  display: grid;
  place-items: center;
  transition: transform calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fcn.open .tg i {
  transform: rotate(180deg);
}

.uv-fcn .mn {
  position: absolute;
  top: calc(100% + .45em);
  left: 0;
  width: 14em;
  padding: .5em;
  border-radius: 1em;
  background: var(--bg);
  box-shadow: 0 18px 40px rgba(0,0,0,.16);
  transform-origin: top left;
  scale: .94;
  opacity: 0;
  pointer-events: none;
  transition: scale calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1),opacity calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1);
  z-index: 3;
}

.uv-fcn.open .mn {
  scale: 1;
  opacity: 1;
  pointer-events: auto;
}

.uv-fcn .sb {
  display: flex;
  align-items: center;
  gap: .5em;
  padding: .5em .8em;
  border-radius: 999px;
  background: color-mix(in srgb,var(--fg) 7%,transparent);
}

.uv-fcn .sb svg {
  width: 1em;
  height: 1em;
  opacity: .5;
  flex: 0 0 auto;
}

.uv-fcn .sb input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: none;
  color: var(--fg);
  font-size: calc(var(--s) * .9);
}

.uv-fcn .ls {
  display: flex;
  flex-direction: column;
  max-height: 11em;
  overflow: auto;
  margin-top: .4em;
}

.uv-fcn .ls button {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 550;
  line-height: 1;
  padding: .72em 1.25em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  position: relative;
  transition: color calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  text-align: left;
  border-radius: .6em;
  padding: .5em .8em;
  font-weight: 500;
}

.uv-fcn .ls button:hover {
  background: color-mix(in srgb,var(--c1) 10%,transparent);
  transform: translateX(3px);
}

.uv-fcn .ls button.hide {
  display: none;
}
`;

// Interacción en JavaScript del DOM: la misma que en la pestaña JS.
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function setup(el: any) {
  const tg=el.querySelector(".tg"),lb=el.querySelector(".tg b"),ip=el.querySelector("input");tg.addEventListener("click",e=>{e.stopPropagation();el.classList.toggle("open");if(el.classList.contains("open"))setTimeout(()=>ip.focus(),80)});ip.addEventListener("input",()=>{const q=ip.value.trim().toLowerCase();el.querySelectorAll(".ls button").forEach(b=>b.classList.toggle("hide",!b.dataset.v.toLowerCase().includes(q)))});el.querySelectorAll(".ls button").forEach(b=>b.addEventListener("click",()=>{lb.textContent=b.dataset.v;el.classList.remove("open")}));document.addEventListener("click",e=>{if(!el.contains(e.target))el.classList.remove("open")})
}

export default function FDdCountry() {
  const ref = useRef<HTMLDivElement>(null);

  useEffect(() => {
    const el = ref.current?.firstElementChild;
    return el ? setup(el) : undefined;
  }, []);

  return (
    <>
      <style>{css}</style>
      <div
        ref={ref} style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <div className="uv-fcn"><button className="tg"><b>🌍 All countries</b><i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round" strokeLinejoin="round"><path d="M6 9l6 6 6-6" /></svg></i></button><div className="mn"><label className="sb"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round"><circle cx="11" cy="11" r="7" /><path d="M20 20l-4.3-4.3" /></svg><input placeholder="Search country" /></label><div className="ls"><button data-v="🇪🇸 Spain">🇪🇸 Spain</button><button data-v="🇫🇷 Francia">🇫🇷 Francia</button><button data-v="🇩🇪 Alemania">🇩🇪 Alemania</button><button data-v="🇮🇹 Italia">🇮🇹 Italia</button><button data-v="🇵🇹 Portugal">🇵🇹 Portugal</button><button data-v="🇲🇦 Marruecos">🇲🇦 Marruecos</button><button data-v="🇲🇽 Mexico">🇲🇽 Mexico</button><button data-v="🇯🇵 Japan">🇯🇵 Japan</button></div></div></div>
      </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 “Country filter with flags” block (Filters) from AIMRAN Library to my project.

## What it is
A country list with flag emojis and a search field inside the menu to jump straight to one.

## Chosen settings
- Main color: #0071e3
- Secondary color: #8ec5ff
- Size: 16px (from 12 to 24px)
- Speed: 1x (from 0.5 to 2x)

## 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, el mismo de la pestaña JS.
import { useEffect, useRef, type CSSProperties } from "react";

const css = `
.uv-fcn {
  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-block;
}

.uv-fcn .tg {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 550;
  line-height: 1;
  padding: .72em 1.25em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  position: relative;
  transition: color calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  display: inline-flex;
  align-items: center;
  gap: .6em;
  background: var(--bg);
  box-shadow: inset 0 0 0 1.5px color-mix(in srgb,var(--fg) 13%,transparent);
}

.uv-fcn .tg:hover {
  color: var(--c1);
  box-shadow: inset 0 0 0 1.5px var(--c1);
}

.uv-fcn .tg svg {
  width: 1em;
  height: 1em;
}

.uv-fcn .tg i {
  display: grid;
  place-items: center;
  transition: transform calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fcn.open .tg i {
  transform: rotate(180deg);
}

.uv-fcn .mn {
  position: absolute;
  top: calc(100% + .45em);
  left: 0;
  width: 14em;
  padding: .5em;
  border-radius: 1em;
  background: var(--bg);
  box-shadow: 0 18px 40px rgba(0,0,0,.16);
  transform-origin: top left;
  scale: .94;
  opacity: 0;
  pointer-events: none;
  transition: scale calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1),opacity calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1);
  z-index: 3;
}

.uv-fcn.open .mn {
  scale: 1;
  opacity: 1;
  pointer-events: auto;
}

.uv-fcn .sb {
  display: flex;
  align-items: center;
  gap: .5em;
  padding: .5em .8em;
  border-radius: 999px;
  background: color-mix(in srgb,var(--fg) 7%,transparent);
}

.uv-fcn .sb svg {
  width: 1em;
  height: 1em;
  opacity: .5;
  flex: 0 0 auto;
}

.uv-fcn .sb input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: none;
  color: var(--fg);
  font-size: calc(var(--s) * .9);
}

.uv-fcn .ls {
  display: flex;
  flex-direction: column;
  max-height: 11em;
  overflow: auto;
  margin-top: .4em;
}

.uv-fcn .ls button {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 550;
  line-height: 1;
  padding: .72em 1.25em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  position: relative;
  transition: color calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  text-align: left;
  border-radius: .6em;
  padding: .5em .8em;
  font-weight: 500;
}

.uv-fcn .ls button:hover {
  background: color-mix(in srgb,var(--c1) 10%,transparent);
  transform: translateX(3px);
}

.uv-fcn .ls button.hide {
  display: none;
}
`;

// Interacción en JavaScript del DOM: la misma que en la pestaña JS.
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function setup(el: any) {
  const tg=el.querySelector(".tg"),lb=el.querySelector(".tg b"),ip=el.querySelector("input");tg.addEventListener("click",e=>{e.stopPropagation();el.classList.toggle("open");if(el.classList.contains("open"))setTimeout(()=>ip.focus(),80)});ip.addEventListener("input",()=>{const q=ip.value.trim().toLowerCase();el.querySelectorAll(".ls button").forEach(b=>b.classList.toggle("hide",!b.dataset.v.toLowerCase().includes(q)))});el.querySelectorAll(".ls button").forEach(b=>b.addEventListener("click",()=>{lb.textContent=b.dataset.v;el.classList.remove("open")}));document.addEventListener("click",e=>{if(!el.contains(e.target))el.classList.remove("open")})
}

export default function FDdCountry() {
  const ref = useRef<HTMLDivElement>(null);

  useEffect(() => {
    const el = ref.current?.firstElementChild;
    return el ? setup(el) : undefined;
  }, []);

  return (
    <>
      <style>{css}</style>
      <div
        ref={ref} style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <div className="uv-fcn"><button className="tg"><b>🌍 All countries</b><i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round" strokeLinejoin="round"><path d="M6 9l6 6 6-6" /></svg></i></button><div className="mn"><label className="sb"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round"><circle cx="11" cy="11" r="7" /><path d="M20 20l-4.3-4.3" /></svg><input placeholder="Search country" /></label><div className="ls"><button data-v="🇪🇸 Spain">🇪🇸 Spain</button><button data-v="🇫🇷 Francia">🇫🇷 Francia</button><button data-v="🇩🇪 Alemania">🇩🇪 Alemania</button><button data-v="🇮🇹 Italia">🇮🇹 Italia</button><button data-v="🇵🇹 Portugal">🇵🇹 Portugal</button><button data-v="🇲🇦 Marruecos">🇲🇦 Marruecos</button><button data-v="🇲🇽 Mexico">🇲🇽 Mexico</button><button data-v="🇯🇵 Japan">🇯🇵 Japan</button></div></div></div>
      </div>
    </>
  );
}
```

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