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