* {
  box-sizing: border-box;
}

html {
  overflow: hidden;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: 0;
  height: 100vh;
}

.background {
  background: url('https://images.unsplash.com/photo-1478098711619-5ab0b478d6e6?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
  background-size: cover;
  background-position: center center;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: scale(1.1);
  z-index: -555;
  filter: blur(20px);
}

@media (max-width: 500px) {
  html {
    font-size: 11px;
  }
}