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我目前正在嘗試使用DOMPDF將HTML文件轉換爲PDF文件。但是，轉換後的PDF文件包含這些紅色和黃色邊框。有什麼辦法可以刪除這些邊界嗎？我的html的Dompdf輸出包含奇怪的邊界
部分：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<!--<link rel="stylesheet" href="<?php echo base_url('styles/CPP.css')?>" type="text/css" />-->
</head>
<body>
<div id="header">
<div id="logo">
<!--<img src="<?php echo base_url('styles/logo.gif')?>"/>-->
</div>
<div id="version-date">
<p>Version date: 26 Aug 2015</p>
</div>
<div id="form-title">
<p><i>Research and Consultancy Office</i></p>
<p>Graduate Studies and Research Education</p>
<p style="font-size: 25px"><strong>Conference Participation Proposal</strong></p>
</div>
</div>
<div id="info">
<p>This form will be used by Coordinating Supervisors to recommend their research students for
conference participation. File Naming Instruction for 2015. For an applicant associated with the
FECS Faculty, intending to participate in the conference CONF2015, please save the form with a
file name like this: <strong>2015</strong> FECS <strong>Student Name (</strong>CONF2015 <strong>
Participation Proposal).docx</strong></p>
</div>
<div id="form-content">
<!--<table border="1">-->
<table border="1" cellpadding="0" cellspacing="0">
<tr>
<th class="table-title" colspan="4">STUDENT DETAILS</th>
</tr>
<tr>
<td class="align-right">Student ID</td>
<td></td>
<td class="align-right-a">Student Name</td>
<td></td>
</tr>
<tr>
<td class="align-right">Course (MBus/MSc/PhD)</td>
<td></td>
<td class="align-right-a">Date of Enrolment</td>
<td></td>
</tr>
<tr>
<td class="align-right">Research Focus or Topic</td>
<td colspan="3"></td>
</tr>
<tr>
<td class="align-right">Coordinating Supervisor</td>
<td colspan="3"></td>
</tr>
</table>
我的控制器：
class Welcome extends CI_Controller {
function __construct()
{
parent::__construct();
$this->load->helper('url');
require_once(APPPATH.'third_party/dompdf/dompdf_config.inc.php');
}
public function index()
{
$dompdf = new DOMPDF();
$data = "123";
$html = $this->load->view('CPP_form/Conference_Participation_Proposal.html',$data,true);
$dompdf->load_html($html);
$dompdf->render();
$dompdf->stream('CPP_Form.pdf',array('Attachment'=>0));
//$this->load->view('CPP_form/Conference_Participation_Proposal.html');
}
}