Element block pseudo-element :before generated with z-index -1 display block margin 0px border 2px rgba(255,255,255,1) solid line-height 1 border-radius box-shadow 5px 5px 8px rgba(0,0,0,0.4) width 160px font-weight normal cursor default padding 20px font-size 16px transform float none transition position absolute overflow visible text-shadow 1px 1px 1px rgba(0,0,0,0.2) height 0% background box-sizing content-box