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