Element block pseudo-class :active generated with font-weight normal margin 0px font-size 16px display block padding 20px width 160px background position static float none box-shadow 1px 1px 1px rgba(0,0,0,0.3) overflow hidden cursor default border-radius transition height auto transform z-index auto text-shadow 1px 1px 1px rgba(0,0,0,0.2) border 4px rgba(51,51,51,1) solid line-height 1 box-sizing content-box