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