body {
  width: 100vw;
  height: 100vh;
  background-color: #0f0f13;
  overflow: hidden;
  position: relative;
  touch-action: manipulation;
}

.main {
  width: 100%;
  height: 100%;
  z-index: 0;
}

.image {
  position: absolute;
  left: calc(50vw - 150px);
  top: calc(50vh - 28px);
  height: 200px;
  z-index: 1;
}

@keyframes rainbow {
  0% { background-color: red; }
  16.67% { background-color: orange; }
  33.33% { background-color: yellow; }
  50% { background-color: green; }
  66.67% { background-color: blue; }
  83.33% { background-color: indigo; }
  100% { background-color: violet; }
}