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