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