body {
  font-family: sans-serif;
  max-width: 700px;
  margin: auto;
  padding: 20px;
  background: #111;
  color: #eee;
}

.post {
  padding: 10px;
  border-bottom: 1px solid #444;
}

a {
  text-decoration: none;
  color: #7cf;
}

input, textarea {
  width: 100%;
  margin: 8px 0;
  padding: 10px;
  background: #222;
  border: 1px solid #555;
  color: #eee;
}

button {
  padding: 10px 20px;
  background: #7cf;
  color: #000;
  border: none;
  cursor: pointer;
}