.siguiente-pista {
  background-color: #fff;
  border: 1px solid #ccc;
  border-radius: 5px;
  color: #333;
  cursor: pointer;
  display: inline-block;
  font-size: 1.5em;
  margin: 1rem 0 0 10px;
  padding: 10px;
  text-decoration: none;
  text-shadow: 0 1px 0 #fff;
  transition: all 0.1s linear;
}