blog/assets/css/extended/style.css

#reply {
  text-align: center;
  margin-top: 2em;
}
#reply a button {
  font-size: 1.2rem;
  padding: 8px 16px;
}
a button {
  background: #0069e5;
  color: #fff;
  border-radius: 4px;
  box-sizing: border-box;
}