extension_popup.html

<!DOCTYPE html>
<html>
  <head>
      <script src="extension_popup.js"></script>
      <title>Deep Tracking Blocker</title>
      <script type="resource_scripts/jquery-3.5.1.min.js"></script>

      <style type="text/css" >
      body {
          min-width: 400px; /* your desired width */
          max-width: 100%;
          position: relative;
          vertical-align:middle;
        }
        .center {
          display: block;
          margin-left: auto;
          margin-right: auto;
        }
        </style >


  </head>
  <body>
        <div id="title">
            <img src="icons/icon96.png" alt="iconoextension" width="50" height="50" class="center" style="float:left;"/>
            <h1> Track Me No More </h1>
            <input type="checkbox" id="onoffButton" name="onoffButton" value="On">
            <label for="onoffButton"> Enable / disable </label><br>
        </div>
        <br>


        <div id="blocked_urls">
            <h2> Blocked urls: </h3>
            If checkbox is checked, that url/host is allowed.
            <br>
        </div>

        <br>

        <h4> Changes will be applied after reloading the page </h4>

        <input type="checkbox" id="saveButton" name="saveButton" value="save" checked>
        <label for="saveButton"> Save changes between browser sessions </label><br>

  </body>
</html>