Element block pseudo-element :before generated with position relative transform display block float left font-size 16px margin 0px cursor default box-sizing border-box box-shadow 1px 1px 1px rgba(0,0,0,0.3) transition width 100% font-weight normal overflow visible z-index auto border 0px rgba(0,0,0,1) solid line-height 1 border-radius background padding 20px height 9px text-shadow 1px 1px 1px rgba(0,0,0,0.2)