Element block pseudo-element :after generated with width 100% position static display block float none transform font-weight bold font-size 15px padding 0px background transition line-height 2 border-radius box-sizing content-box cursor default text-shadow 1px 1px 1px rgba(0,0,0,0.2) overflow hidden box-shadow 1px 1px 1px rgba(0,0,0,0.3) z-index auto margin 0px border 0px rgba(0,0,0,1) solid height 30px