body {
  background-image: linear-gradient(to top, #feada6 0%, #f5efef 100%);
  background-size: 50px 1000px;
  font-family: 'Acme', sans-serif;
}

header {
  display: flex;
  justify-content: space-between;
}

h1 {
  font-size: 100px;
  color: gray;
}

nav a {
  font-size: 40px;
  color: gray;
}

a {
  text-decoration: none;
}

main {
  display: grid;
  grid-template-columns: 1fr;
  grid-gap: 10px;
}

article {
  background-repeat: no-repeat;
  background-size: contain;
  height: 400px;
  background-position: center;
}

article a {
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  color: transparent;
  font-size: 50px;
  text-decoration: none;
}

article:nth-child(1) {
  background-image: url(../img/SphinxCat.jpeg);
}

article:nth-child(2) {
  background-image: url(../img/SphinxCat2.jpeg);
}

article:nth-child(3) {
  background-image: url(../img/SphinxCat3.jpg);
}

article a:hover {
  color: purple;
  text-shadow: 1px 1px 1px gray;
}

@media (min-width: 576px) {
  main {
    grid-template-columns: 1fr 1fr 1fr;
  }
}