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