body {
  background: #0d1b2a;
  color: #e0e1dd;
  font-family: monospace;
  padding: 2rem;
  max-width: 800px;
  margin: auto;
}
h1 {
  color: #00ff9d;
  margin-bottom: 1rem;
}
textarea {
  width: 100%;
  height: 200px;
  background: #1b263b;
  color: #e0e1dd;
  border: none;
  padding: 1rem;
  font-family: monospace;
  margin-bottom: 1rem;
  resize: vertical;
}
button {
  background: #00ff9d;
  color: #0d1b2a;
  font-weight: bold;
  border: none;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  margin-right: 1rem;
  margin-bottom: 2rem;
}
button:hover {
  background: #00e68a;
}
iframe {
  width: 100%;
  height: 400px;
  border: 1px solid #00ff9d;
  margin-top: 1rem;
}
footer {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: #748cab;
  text-align: center;
}
a {
  color: #00b4d8;
}
main {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.buttons {
  flex-direction: row;
}