Element block pseudo-element :before generated with display block z-index auto cursor default overflow hidden border 0px rgba(0,0,0,1) solid height auto padding 20px margin 0px border-radius background text-shadow 1px 1px 1px rgba(0,0,0,0.2) transition font-weight normal font-size 16px transform line-height 1 position absolute box-sizing content-box width 276px float none box-shadow 1px 1px 1px rgba(0,0,0,0.3)