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