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