body { max-width: 850px; margin: auto; line-height: 1.7; }
a.button {
  display:inline-block;
  background:#f8f9fa;
  border:1px solid #ddd;
  border-radius:8px;
  padding:0.4rem 0.9rem;
  text-decoration:none;
  color:#333;
  font-weight:500;
}
a.button:hover { background:#e6e6e6; }