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