index.html

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    <link rel="stylesheet" href="index.css">

    <title>SIMPLE TOGGLE MENU</title>

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    <nav class ="nav-main">
        <div class="btn-toggle-nav" onclick="toggleNav()"></div>
            <ul>
                <li><a href="#">Home</a></li>
                <li><a href="#">About</a></li>
                <li><a href="#">Contact Us</a></li>
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        <ul>
            <li><span>Home</span></li>
            <li><span>About</span></li>
            <li><span>View</span></li>
            <li><span>Contact Us</span></li>
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