[css] top, right, bottom, left

div {
    /* top, right, bottom, left */
    padding: 10px 5px 15px 20px;

    /* (top) (right, left) (bottom) */
    padding: 10px 5px 15px;

    /* (top, bottom) (right, left) */
    padding: 10px 5px;

    /* (all sides: top, bottom, left, right) */
    padding: 10px;
}