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