body {
  margin: 0;
}

ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  max-width: 100vw;
  margin: 0;
  padding: 0;
}

li {
  border: 1px solid gray;
}

a {
  display: block;
  width: 100%;
  height: 100%;
}

img {
  width: 48vw;
  height: auto;
}