#turtle {
  width: 100px;
  background: #388E3C;
  height: 100px;
  border-radius: 42%;
  border: 2px solid white;
  transition: 1s;
  position: relative;

  &::after {
    content: "";
    width: 20%;
    height: 20%;
    background: #795548;
    border-radius: 42%;
    position: absolute;
    inset-inline-start: 95%;
    inset-block-start: 40%;
    border: 2px solid white;
  }
}

header {
  background: black;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  padding: 1rem;
  gap: 1rem;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  height: 100dvh;
  overflow: clip;
}

main {
  flex: 1;
  display: grid;
  place-items: center;
}

output {
  background: black;
  padding: 1rem;
  font-family: monospace;
  color: white;
}