div.slider
  ul
    li
      label
        input(name="switch", type="radio", checked)
        img.preview(src="https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png")
        div.image
          img(src="https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png")
    li
      label
        input(name="switch", type="radio")
        img.preview(src="http://p3.qhmsg.com/t01b7cb83f41d31a8bf.png")
        div.image
          img(src="http://p3.qhmsg.com/t01b7cb83f41d31a8bf.png")
    li
      label
        input(name="switch", type="radio", checked)
        img.preview(src="https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png")
        div.image
          img(src="https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png")
    li
      label
        input(name="switch", type="radio")
        img.preview(src="http://p3.qhmsg.com/t01b7cb83f41d31a8bf.png")
        div.image
          img(src="http://p3.qhmsg.com/t01b7cb83f41d31a8bf.png")