abstract：<!DOCTYPE html><html><head><meta charset='utf-8'><title>表格</title><script src='main.js'></script><style type="text/css">
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<title>表格</title>
<script src='main.js'></script>
<style type="text/css">
*{margin: 0px ;padding: 0px;}
table{width: 300px;border: 1px solid rgb(0, 0, 0);border-collapse: collapse;}
tr th{height: 20px;border:1px solid rgb(0, 0, 0);}
tr td{height: 20px;border:1px solid rgb(0, 0, 0);text-align: center;}
</style>
</head>
<body>
<table>
<tr>
<th colspan="3">2019届北京大学三三班通讯录</th>
</tr>
<tr >
<td>姓名</td>
<td>电话</td>
<td>住址</td>
</tr>
<tr>
<td>张铭</td>
<td>13352135531</td>
<td>河北</td>
</tr>
<tr>
<td>李柳</td>
<td>15236844588</td>
<td>四川</td>
</tr>
<tr>
<td>陈华</td>
<td>17512225577</td>
<td>湖北</td>
</tr>
</table>
</body>
</html>