Does it support modern JavaScript?

Yes, the JavaScript runs directly in your browser, supporting whatever modern APIs your browser supports.

Can I use external libraries like React or Tailwind?

Currently it's meant for vanilla HTML/CSS/JS, but you can include CDN links in the HTML head.

Code is executed locally. Be sure to copy your work before closing the tab.

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HTML · CSS · JS — Live EditorHTML Editor

HTML17 lines · 468 chars

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #0a0a0a;
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero {
  text-align: center;
  padding: 40px 24px;
  position: relative;
}

.glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(220,38,38,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

h1 {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 0%, #a3a3a3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

h1 span { -webkit-text-fill-color: initial; }

p {
  color: #737373;
  font-size: 1rem;
  max-width: 400px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

button {
  background: #dc2626;
  color: white;
  border: none;
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 14px;
}

button:hover {
  background: #b91c1c;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(220,38,38,0.35);
}

button:active { transform: translateY(0); }

.counter {
  color: #525252;
  font-size: 0.8rem;
  font-family: monospace;
}

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