<!DOCTYPE html>
<html>
  <head>
    <base href="/">
    <title>М & Л | admin</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
  </head>
  <body>
    <llta-header></llta-header>

    <main class="container">
      <llta-app>Завантажується...</llta-app>
    </main>

    <llta-footer></llta-footer>
  </body>
</html>

<!DOCTYPE html>
<html>
  <head>
    <base href="/">
    <title>М & Л | admin</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
  </head>
  <body>
    <llta-header></llta-header>

    <main class="container">
      <llta-app>
        <h1 class="center-align">
          Завантажується...
        </h1>
      </llta-app>
    </main>

    <llta-footer></llta-footer>
  </body>
</html>

Change main page style before loading app
Change main page style before loading app
