*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: monospace;
  font-size: 1rem;
  max-width: 640px;
  margin: 4rem auto;
  padding: 0 1rem;
  color: #111;
  background: #fff;
}

input[type="text"],
input[type="url"] {
  display: block;
  width: 100%;
  padding: 0.5rem;
  font-family: monospace;
  font-size: 1rem;
  border: 1px solid #ccc;
  margin-bottom: 0.5rem;
}

button {
  padding: 0.5rem 1.25rem;
  font-family: monospace;
  font-size: 1rem;
  cursor: pointer;
}

#result {
  margin-top: 1rem;
  word-break: break-all;
}