body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
  margin: 0;
}

a {
  font-size: 30px;
  color: rgba(0, 0, 0, 0.5);
  font-weight: 900;

  text-decoration: none;

  margin-top:    20px;
  margin-bottom: 20px;
}
a:hover {
  color: rgba(0, 0, 0, 1);
}