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