Element block pseudo-element :before generated with background position static border 0px rgba(0,0,0,1) solid text-shadow 1px 1px 1px rgba(0,0,0,0.2) border-radius font-size 16px margin 0px box-sizing content-box font-weight normal transform overflow hidden z-index auto width 160px height auto line-height 1 box-shadow 1px 1px 1px rgba(255,255,0,0.7) padding 20px cursor default display block float none transition