styles.html

<!doctype html>
<html lang="ko">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" href="styles.css" />
  </head>
  <body>
    <div class="container">
      <header>
        <a href="/popup.html">&lt;</a>
        <span id="stylesConfig"></span>
      </header>
      <div id="list"></div>
      <button id="reload" class="hidden">
        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
          <path
            d="M369.1 142.9L312 200l24 24H496V64L472 40 414.4 97.6l0 0c-87.5-87.5-229.3-87.5-316.8 0s-87.5 229.3 0 316.8s229.3 87.5 316.8 0l-45.3-45.3c-62.5 62.5-163.8 62.5-226.3 0s-62.5-163.8 0-226.3s163.8-62.5 226.3 0l0 0z"
          />
        </svg>
      </button>
    </div>
    <script src="styles.js"></script>
  </body>
</html>