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