.container {
  max-width: 730px;
}

h1, h2, h3 {
  font-family: sans-serif;
}

h2 {
  margin: .5em 0 .2em;
  padding: 0;
}

textarea {
  height: 6em;
  width: 100%;
  display: block;
  -webkit-appearance: none;
  padding: .3em;
  font-family: monospace;
}

.group {
  padding: 1em;
}
.result {
  padding: 1em;
  border: 1px solid #eee;
  margin-bottom: 2em;
  overflow: auto;
}


.dark {
  background: #333;
}