*,
*::before,
*::after {
  box-sizing: border-box;
}
body {
  margin: 0;
  height: 100vh;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 1fr;
  background-color: #3065d0;
}
.bg-yellow {
  background-color: #ffd54f;
}
.text-yellow {
  color: #ffd54f;
}