.Biologyback {
  background-image: url("images/background/biologyback.jpg");
}

.biobgimage {
  background-image: url("images/background/stars.png");
}

* {
  color: white;
  border-radius: 3rem;
  font-family: zilla-slab;
  letter-spacing: 3px;
  text-shadow: 10px 10px 20px white;
  padding: 1.8rem;
}

a {
  display: inline-block; /* Essential to enable width/height */
  width: 200px;
  height: 50px;
  padding: 10px; /* Padding also increases the clickable area */
}