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