<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Back</title>
</head>
<style>
    body{
        text-align: center;
    }
    .back{
        text-align: center;
        position: absolute;
        top: 35%;
        left: 50%;
        transform: translateX(-50%);
    }
    .back h3{
        font-size: 20px;
    }
    .back a{
        text-decoration: none;
        color: #378de5;
        font-size: 16px;
        font-weight: bold;
    }
</style>
<body>
<div class="back">
    <h3>你已经成功登出</h3>
    <a href="/">返回主页</a>
</div>
</body>
</html>