@import "markdown.css"; :root { --max-width: 900px; } main { max-width: var(--max-width); } /* Filetree */ aside { float: left; margin-left: 20px; position: sticky; top: 0; } aside ul { list-style: none; padding-left: 0.6em; } aside li { position: relative; } /* Element */ aside li:before { content: ""; position: absolute; top: -0.2em; left: -1em; height: 1em; } aside li.collapsed > ul { display: none; } aside li.directory::before { content: "+"; } aside li:not(.collapsed).directory::before { content: "-"; } aside li.directory { cursor: pointer; } @media print { aside { display: none; } } main img { max-width: 100%; }