A simple CSS rule to make the entire page spin constantly in the browser

spin.css

/* 
Tells the body to apply the "spin" animation.
Change the `2s` to alter the speed.
Also change the selector from `body` to some other selector to target something else
*/
body {
  animation: spin 2s infinite linear
}

/* 
Defines the "spin" animation as a rotation from 0 degrees to 360 degrees
*/
@keyframes spin {
  from {
    transform: rotate(0deg)
  }

  to {
    transform: rotate(360deg)
  }
}