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

html,
body {
  min-height: 100%;
  background: #000;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
}

.poster-wrap {
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0;
  overflow: hidden;
}

.poster {
  display: block;
  width: min(100vw, 100%);
  height: min(100vh, 100dvh);
  object-fit: contain;
}