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