SOURCE

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>综合布局实例</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        header {
            background-color: #666;
            color: #fff;
            text-align: center;
            padding: 16px;
            font-size: 20px;
        }
        nav {
            display: flex;
            justify-content: space-around;
            background-color: #888;
            padding: 12px 0;
        }
        nav a {
            color: white;
            text-decoration: none;
        }
        main {
            display: flex;
            min-height: 60vh;
        }
        aside {
            width: 150px;
            display: flex;
            flex-direction: column;
        }
        .sidebar1 {
            flex: 1;
            background-color: #ddd;
            padding: 10px;
        }
        .sidebar2 {
            flex: 1;
            background-color: #ccc;
            padding: 10px;
        }
        .content-wrap {
            flex-grow: 1;
            display: flex;
        }
        .main-content1 {
            flex: 1;
            background-color: #bbb;
            padding: 10px;
        }
        .main-content2 {
            flex: 1;
            background-color: #aaa;
            padding: 10px;
        }
        footer {
            background-color: #444;
            color: #fff;
            text-align: center;
            padding: 10px;
        }
    </style>
</head>
<body>
    <header>页面主标题</header>
    <nav>
        <a href="#">首页</a>
        <a href="#">新闻中心</a>
        <a href="#">资料中心</a>
        <a href="#">媒体聚焦</a>
        <a href="#">专题学习</a>
        <a href="#">专题活动</a>
        <a href="#">关于我们</a>
    </nav>
    <main>
        <aside>
            <div class="sidebar1">侧边栏1</div>
            <div class="sidebar2">侧边栏2</div>
        </aside>
        <div class="content-wrap">
            <div class="main-content1">主体内容1</div>
            <div class="main-content2">主体内容2</div>
        </div>
    </main>
    <footer>版权声明</footer>
</body>
</html>