teacher页面的代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<title>Title</title>
<link rel="stylesheet" href="bootstrap/css/bootstrap.css">
<link rel="stylesheet" href="css/user.css">
<link rel="stylesheet" href="css/teacher.css">
<script src="JavaScript/jquery-2.2.1.min.js"></script>
<script src="bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<div class="user_bac_img_div">
<img class="user_bac_img" src="img/user_img1.jpg" alt="">
</div>
<nav >
</select>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default" >
发布
</button>
</div>
</div>
</form>
</div>
</div>
</div>
<div class="col-lg-9" >
提交作业
</button>
</div>
</div><!-- /.modal-content -->
</div><!-- /.modal-dialog -->
</div><!-- /.modal -->
<!-- 设置的模态框（Modal） -->
<div class="modal fade" >
提交更改
</button>
</div>
</div><!-- /.modal-content -->
</div><!-- /.modal-dialog -->
</div><!-- /.modal -->
</div>
</body>
</html>