left.html

<section class="kangho">
    <ul>
        <a href="https://limkangho.github.io/ComputerNetwork2/index.html">
            <li>
                <i class="fas fa-home"></i>
                KANGHO LIM
            </li>
        </a>
    </ul>
    
</section>

<section class="chapter">
    <ul>
        <a href="https://limkangho.github.io/ComputerNetwork2/IPS/ips.html"><li id="ips"><i class="fas fa-layer-group"></i>IPS</li></a>
        <ul>
            <a href="https://limkangho.github.io/ComputerNetwork2/IPS/application/application.html"><li id="application"><i class="far fa-file-code"></i>APPLICATION</li></a>
            <a href="https://limkangho.github.io/ComputerNetwork2/IPS/transport/transport.html"><li id="transport"><i class="fas fa-bus"></i>TRANSPORT</li></a>
            <a href="https://limkangho.github.io/ComputerNetwork2/IPS/network/network.html"><li id="network"><i class="fas fa-network-wired"></i>NETWORK</li></a>
            <a href="https://limkangho.github.io/ComputerNetwork2/IPS/link/link.html"><li id="link"><i class="fas fa-link"></i>LINK</li></a>
        </ul>
        <a href="https://limkangho.github.io/ComputerNetwork2/wireless/wireless.html"><li id="wireless"><i class="fas fa-wifi"></i>WIRELESS</li></a>
        <a href="https://limkangho.github.io/ComputerNetwork2/mobile/mobile.html"><li id="mobile"><i class="fas fa-mobile-alt"></i>MOBILE</li></a>
        <a href="https://limkangho.github.io/ComputerNetwork2/security/security.html"><li id="security"><i class="fas fa-shield-alt"></i>SECURITY</li></a>
    </ul>
</section>