Card Stack

card-stack.css

/*
  |--------------------------------------------------------------------------
  | Card Stack
  |--------------------------------------------------------------------------
  |
  | Adds a visual effect to make an element looks like there are multiple
  | stacks of it. Uses white background and gray border, used for Bootstrap
  | 4 cards.
  |
  */

.card-stack {
    box-shadow: 0 0.0625em 0.1875em 0 #ffffff, 
                0 0.5em 0 -0.25em rgba(0, 0, 0, 0.121569),
                0 0.5em 0.1875em -0.25em #ffffff,
                0 1em 0 -0.5em rgba(0, 0, 0, 0.121569),
                0 1em 0.1875em -0.5em #ffffff;
}