Element block pseudo-class :active generated with box-sizing content-box opacity 1 cursor default margin 0px font-weight normal box-shadow 0px 0px 2px rgba(0,0,0,0.5) float none height auto text-shadow 1px 1px 0px rgba(255,255,255,0.2) transition transform border-radius line-height normal overflow visible outline none font-size 16px position static padding 5px z-index auto width auto border 0px rgba(0,0,0,1) solid background display block