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