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