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