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