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