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