style.css

body, textarea, input {
  background-color: #222;
  color: #ddd;
  font-size: 1.0rem;
  line-height: 1.4;
  font-family: monospace;
  padding: 0;
  margin: 0;
}

body {
  padding: 24px;
}

textarea {
  width: 100%;
  height: 200px;
}

a {
  text-decoration: none;
  color: #04ee85;
}

input {
  margin-top: 5px;
  width: 100%;
  border: 1px solid #969696;
  padding: 5px;
  border-radius: 3px;
}