Element block pseudo-class :active generated with transition padding 20px z-index auto width 160px position static text-shadow 1px 1px 1px rgba(0,0,0,0.2) display block overflow hidden box-sizing content-box font-size 16px height auto border-radius cursor default background float none line-height 1 margin 0px font-weight normal box-shadow 1px 1px 1px rgba(0,0,0,0.3) border 0px rgba(0,0,0,1) solid transform