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