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