body {
  background: #0a0a0a;
  color: #e5e5e5;
  font-family: Arial, sans-serif;
  max-width: 900px;
  margin: auto;
  padding: 20px;
}

header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 30px;
}

textarea {
  width: 100%;
  height: 120px;
  margin: 10px 0;
  background: #111;
  color: white;
  border: 1px solid #333;
}

button {
  margin: 5px;
  padding: 8px 12px;
  background: #2563eb;
  border: none;
  color: white;
  cursor: pointer;
}