/* The z-index CSS property sets the z-order of a positioned element and its
descendants or flex items. Overlapping elements with a larger z-index cover
those with a smaller one. */
/* Keyword value */
z-index: auto;
/* <integer> values */
z-index: 0;
z-index: 3;
z-index: 289;
z-index: -1; /* Negative values to lower the priority */
/* Global values */
z-index: inherit;
z-index: initial;
z-index: unset;