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