body {
  font-family: monospace;
  background: #0d1117;
  color: #c9d1d9;
  padding: 20px;
}



label {
  font-size: 1.1em;
  margin-bottom: 5px;
  display: block;
}

textarea, input, button {
  width: 100%;
  margin: 10px 0;
  padding: 10px;
  background: #161b22;
  color: #fff;
  border: 1px solid #30363d;
  border-radius: 4px;
  font-size: 1em;
}