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