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