*,
*::after,
*::before {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue';
}

a {
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
}

body {
  height: 100vh;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  place-content: center;
}

h1 {
  text-align: center;
  font-size: 8vmax;
  color: transparent;
  background-image: linear-gradient(to right, #f00, #ff0, #0ff, #0f0, #00f);
  background-clip: text;
  animation: animate 20s linear infinite;
  background-size: 1000%;
}

@keyframes animate {
  0% {
    background-position: 0% 100%;
  }
  50% {
    background-position: 100% 0%;
  }
  100% {
    background-position: 0% 100%;
  }
}