html {
  box-sizing: border-box;
  scroll-behavior: smooth;
  height: 100%;
}

*,
*::after,
*::before {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
  height: 100%;
  background-image: url(./IMG_9104.jpg);
  background-size: cover;
  background-position: 50% 50%;
  background-repeat: no-repeat;
}