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