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