:root {
  color-scheme: light;
  background: #f4f5f7;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background: #f4f5f7;
}

main {
  display: grid;
  min-height: 100dvh;
  place-items: center;
  padding: 24px;
}

.poster {
  display: block;
  width: min(100%, 427px);
  height: auto;
  background: #ffffff;
  box-shadow: 0 8px 24px rgb(0 0 0 / 12%);
}

@media (max-width: 639px) {
  main {
    align-items: start;
    padding: 0;
  }

  .poster {
    width: 100%;
    box-shadow: none;
  }
}