网页显示不出来 ！求救

<!DOCTYPE html>
<html>
    <head>
        <title>Grails</title>
        <link rel="stylesheet" href="/library/css/main.css" />
        <link rel="shortcut icon" href="/library/images/favicon.ico" type="image/x-icon" />
        
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
        <meta name="layout" content="main"/>
        
        <title/>
        <style type="text/css" media="screen">        #nav2 {
            margin-top:20px;
            margin-left:30px;
            width:228px;
            float:left;        }        </style>
    
        <script type="text/javascript" src="/library/js/application.js"></script>    </head>
    <body>
        <!-- -->
        <link rel="stylesheet" href="/library/css/main.css" />
         <div id="header">
    <p><font size="6em" color="#ffffff"> 图书馆</font> </p></div>
        
      <div id="nav2">
                    <a href="/library/user/logout">重新登录</a>            <div id="nav2">
             <div class="homePagePanel">
                <div class="panelTop"></div>
                <div class="panelBody">                    <h1>类别搜索</h1>
                    <ul>
                    
                            <tr class="odd">
                                    <li><a href="/library/book/sortList?name=%E8%AE%A1%E7%AE%97%E6%9C%BA">计算机></a></li>
                            </tr>
                    
                            <tr class="even">
                                    <li><a href="/library/book/sortList?name=%E5%8F%A4%E5%85%B8%E6%96%87%E5%AD%A6">古典文学></a></li>
                            </tr>
                    
                            <tr class="odd">
                                    <li><a href="/library/book/sortList?name=%E5%B8%82%E5%9C%BA%E8%90%A5%E9%94%80">市场营销></a></li>
                            </tr>
                    
                    </ul>                    <h1>导航页面</h1>
                    <ul>                        <li><a href="/library/book/search">搜索图书</a></li>                        
                            <li><a href="/library/user/list">用户管理</a> </li>
                            <li><a href="/library/borrow/askborrow">借书</a> </li>
                            <li><a href="/library/borrow/search">借阅管理</a> </li>
                            <li><a href="/library/borrow/list">借出书目</a> </li>
                            <li><a href="/library/book/create">图书录入</a> </li>
                            <li><a href="/library/sort/list">管理图书类</a>  </li>
                                                
                        <li><a href="/library/borrow/myBorrow">我的借阅</a></li>                    </ul>                </div>
                <div class="panelBtm"></div>            </div>
        </div>      </div>
     
          <p align="center">
           管理员 : laihui</p>
    
        <div class="nav">
            <span class="menuButton"><a href="/library/book/search">Home</a></span>
            <span class="menuButton"><a href="/library/book/list" class="list">Book List</a></span>
            <span class="menuButton"><a href="/library/book/create" class="create">New Book</a></span>
        </div>
        <div class="body">
            <h1>修改图书</h1>
            
            
            <form action="/library/book/index" method="post" >
                <input type="hidden" name="id" value="3" id="id" />
                <input type="hidden" name="version" value="0" id="version" />
                <div class="dialog">
                    <table>
                        <tbody>
                        
                            <tr class="prop">
                                <td valign="top" class="name">
                                  <label for="sort">类别</label>
                                </td>
                                <td valign="top" class="value ">
                                    <select name="sort.id" id="sort.id" >
<option value="1" >计算机</option>
<option value="2" >古典文学</option>
<option value="5" selected="selected" >市场营销</option>
</select>
                                </td>
                            </tr>
                        
                            <tr class="prop">
                                <td valign="top" class="name">
                                  <label for="name">书名</label>
                                </td>
                                <td valign="top" class="value ">
                                    <input type="text" name="name" value="营销技巧" id="name" />
                                </td>
                            </tr>
                        
                            <tr class="prop">
                                <td valign="top" class="name">
                                  <label for="author">作者</label>
                                </td>
                                <td valign="top" class="value ">
                                    <input type="text" name="author" value="11" id="author" />
                                </td>
                            </tr>
                        
                            <tr class="prop">
                                <td valign="top" class="name">
                                  <label for="press">出版社</label>
                                </td>
                                <td valign="top" class="value ">
                                    <input type="text" name="press" value="21234" id="press" />
                                </td>
                            </tr>
                        
                            <tr class="prop">
                                <td valign="top" class="name">
                                  <label for="versions">版本</label>
                                </td>
                                <td valign="top" class="value ">
                                    <input type="text" name="versions" value="251" id="versions" />
                                </td>
                            </tr>                            <tr class="prop">
                                <td valign="top" class="name">
                                    <label for="introduction">简介</label>
                                </td>
                                <td valign="top" class="value ">
                                    <textarea  name="introduction" ></textarea>                                </td>
                            </tr>
                        
                        </tbody>
                    </table>
                </div>
                <div class="buttons">
                    <span class="button"><input type="submit" name="_action_update" value="Update" class="save" /></span>
                    <span class="button"><input type="submit" name="_action_delete" value="Delete" class="delete" onclick="return confirm('Are you sure?');" /></span>
                </div>
            </form>
        </div>
    
    </body>
</html>
为什么打开后不会显示网页呢