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

body {
  background: #9ec9ad;
  font-family: system-ui, sans-serif;
}

main {
  position: relative;
  box-sizing: border-box;
  display: grid;
  place-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 1rem;
  overflow: hidden;
}

img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

h1 {
  position: relative;
  margin: 0;
  padding: 0.4em 0.55em;
  border-radius: 0.2em;
  background: rgb(0 0 0 / 48%);
  color: white;
  font-size: clamp(1.75rem, 5vw, 3.125rem);
  line-height: 1.15;
  text-align: center;
  text-wrap: balance;
}