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