<input type="checkbox" id="lines"><label for="lines">Show lines</label><br>
<input type="checkbox" id="circles"><label for="circles">Show circles</label><br>
</div>
+ <a href="https://github.com/EliasFleckenstein03/lagrange-playground" style="position: fixed; bottom: 5px; right: 5px">View Source</a>
</body>
</html>