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