<header class="site-header">

  <div class="wrapper">

    <span class="site-title">
      <a class="page-link" href="{{ site.baseurl | prepend: site.url }}/spring2025/">{{ site.name }}</a>
    </span>

    <nav class="site-nav">
      <input type="checkbox" id="nav-trigger" class="nav-trigger" />
        <label for="nav-trigger">
          <span class="menu-icon">
            <svg viewBox="0 0 18 15" width="18px" height="15px">
              <path fill="#424242" d="M18,1.484c0,0.82-0.665,1.484-1.484,1.484H