UIKIT3手机导航(基本的抽屉式导航,带二级折叠)

<!DOCTYPE html>
<html>
    <head>
        <title>Title</title>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <link href="https://cdn.staticfile.org/uikit/3.5.4/css/uikit.min.css" rel="stylesheet">
        <script src="https://cdn.staticfile.org/uikit/3.5.4/js/uikit.min.js"></script>
        <script src="https://cdn.staticfile.org/uikit/3.5.4/js/uikit-icons.min.js"></script>
    </head>
    <body>
    	<style>
    		.uk-logo{
    			position: absolute;
    			left: 15px;
    			top: 10px;
    		}
    		.m-menu{
    			width: 40px; 
    			height: 40px;
    			position: absolute;
    			right: 0;
    			top: 0;
    			text-align: center;
    			padding: 10px;
    		}
    		.m-menu i{
    			color: #000
    		}
    		.body{
    			background-color: #d8d8d8;
    		}

    		/* 复写样式 */
    		.uk-offcanvas-bar{
    			background-color: #222;
    		}
    		.uk-nav-default > li{
                border-bottom: #0c0c0c 1px solid;
                border-top: #383737 1px solid;
    		}
    		.uk-nav-default > li:first-child{
    			border-top: none;
    		}
    		.uk-nav-default > li:last-child{
    			border-bottom: none;
    		}
    		.uk-nav-default > li > a{
    			padding: 10px;
    		}
    		.uk-nav-default > li.uk-open{
    			background-color: #383838;
    		}
    		ul.uk-nav-sub{
    			padding: 5px 0 5px 25px;
    		}
    		ul.uk-nav-sub a{
    			padding: 6px 0;
    		}
    	</style>
    	<header class="uk-position-relative">
    		<a href="" class="uk-logo">LOGO</a>
    		<a href="" class="m-menu uk-flex uk-flex-middle uk-flex-center" uk-toggle="target: #offcanvas-menu"><i uk-icon="icon:menu; ratio:1.5"></i></a>
    	</header>
    	<div id="offcanvas-menu" uk-offcanvas="flip: true; overlay: true">
            <div class="uk-offcanvas-bar">
                <button class="uk-offcanvas-close" type="button" uk-close></button>
                <ul class="uk-nav-default uk-margin-large-top uk-nav-parent-icon" uk-nav>
                    <li class="uk-active"><a href="#">首页</a></li>
                    <li class="uk-parent">
                        <a href="#">产品中心</a>
                        <ul class="uk-nav-sub">
                            <li><a href="#">政企产品应用系统</a></li>
                            <li><a href="#">商用娱乐音响系统</a></li>
                            <li><a href="#">商用音频音响系统</a></li>
                            <li><a href="#">专业影院还音系统</a></li>
                        </ul>
                    </li>
                    <li class="uk-parent">
                        <a href="#">解决方案</a>
                        <ul class="uk-nav-sub">
                            <li><a href="">场馆</a></li>
                            <li><a href="">学校</a></li>
                            <li><a href="">会议</a></li>
                            <li><a href="">商业</a></li>
                            <li><a href="">影院</a></li>
                            <li><a href="">文旅</a></li>
                        </ul>
                    </li>
                    <li><a href="">关于我们</a></li>
                    <li><a href="">联系我们</a></li>
                </ul>
            </div>
        </div>
        <div class="body uk-height-viewport uk-text-center uk-flex uk-flex-middle uk-flex-center">
        	<span>BODY</span>
        </div>
    </body>
</html>