<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<style>
canvas{
position:absolute;
top:0;
left:0;
background-color:black;
}
#dash{border:1px dashed red;}
</style>
</head>
<body>
<canvas id=c style="z-index:-1"></canvas>
<script src="js/index.js"></script>
<br><br><br><br><br><br>
<div style="background-color:#52096C;margin:0 auto;width:25%;" id="dash">
<form action="#" method="post">
<table style="margin:0 auto;">
<tr>
<th> </th>
<td> </td>
</tr>
<tr>
<th></th>
<td><input value="admin"/></td>
</tr>
<tr>
<tr>
<th> </th>
<td> </td>
</tr>
<tr>
<th> </th>
<td> </td>
</tr>
<tr>
<th></th>
<td><input type="password" value="admin"/></td>
</tr>
<tr>
<th> </th>
<td> </td>
</tr>
<tr>
<th> </th>
<td> </td>
</tr>
<tr>
<th style="text-align:center;"><input type="reset" value="重置"></th>
<td style="text-align:center;"><input type="button" value="登录"></td>
</tr>
<tr>
<th> </th>
<td> </td>
</tr>
</table>
</form>
</div>
</body>
</html>