* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-red: #ff5f5f;
  --color-blue: #002aff;
  --color-grey: #f0f0ef;
}

body {
  width: 100%;
  height: 100vh;
  height: 100svh;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  background-color: var(--color-grey);
  background-image: radial-gradient(#ffffff 2px, transparent 2px);
  background-size: 20px 20px;
}

main {
  padding: 1rem;
}

main img {
  width: 50vw;
  max-width: 500px;
}