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