form button,
a.button {
  padding: 10px;
  border-radius: 5px;
  border: 1px solid #808080;
}
a.button {
  text-decoration: none;
}
form button,
a.button button {
  padding: 10px;
  color: #f00;
}
form button:hover,
a.button button:hover {
  color: #00f;
}
body,
form,
a.button {
  width: 75%;
}