html {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: #020202;
}

.satu {
  height: 100vh;
  background-size: cover;
  background-attachment: fixed;
  display: flex;
  justify-content: center;
  align-items: center;
}


@media (max-width: 600px) {
  .satu img {
    width: 50%;
  }
}