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