我现在需要做一个轮翻图，但我不知道问题出在哪儿了

      
      <div class="carousel-inner" role="listbox">
        <div class="item active">
            < img src="../img/logo.jpg"/>
        div>
        <div class="item">
            < img src="../img/合照1.jpg"/>
        div>
        <div class="item">
            < img src="../img/合照2.jpg"/>
        div>
        <div class="item">
            < img src="../img/合照3.jpg"/>
        div>
        <div class="item">
            < img src="../img/合照4.jpg"/>
        div>
      div>
    
      
      <a class="left carousel-control" href=" " role="button" data-slide="prev">
        <span class="glyphicon glyphicon-chevron-left" aria-hidden="true">span>
        <span class="sr-only">Previousspan>
      
      <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
        <span class="glyphicon glyphicon-chevron-right" aria-hidden="true">span>
        <span class="sr-only">Nextspan>
      
    div>
body>