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