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