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