index.html

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Project browser</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" type="text/css" media="screen" href="tree.css" />
    <script src="tree.js" defer></script>
</head>

<body style="height:100vh; margin: 0;">
    <div id="tree" class="tree">
        <h4>Doubble click to open file</h4>
        <div class="treeButton">&#9660</div>
        <div class="name">Root</div>
    </div>
    <div class="desc">
        <h1>Description</h1>
        <div id="desc"></div>
    </div>
    <a href="https://github.com/TheGrandCircuit/IT2">
        <img src="https://image.flaticon.com/icons/svg/25/25231.svg" width="100" height="100" style="bottom:0;left:0;position: absolute;">
    </a>
</body>

</html>