nk id="css-light" rel="stylesheet" href="https://bootswatch.com/3/flatly/bootstrap.css" media="(prefers-color-scheme: light), (prefers-color-scheme: no-preference)">

<!-- Darkly Theme - Dark -->
<link id="css-dark" rel="stylesheet" href="https://bootswatch.com/3/darkly/bootstrap.css" media="(prefers-color-scheme: dark)">

<!-- preferably CSS -->
<link rel="stylesheet" href="../preferably.css">
<link id="css-code-light" rel="stylesheet" href="../code-color-scheme-light.css" media="(prefers-color-scheme: lig