Vaadin and own fownts

Flow
1

How I can use own fonts???

<custom-style>
  <style>
    @font-face {
      font-family: 'Circular Std Book';
      font-style: normal;
      font-weight: normal;
      src: local('Circular Std Book'), url('frontend://fonts/CircularStd-Book.woff') format('woff');
    }
  </style>
</custom-style>
2

Hi,

Which version of Vaadin are you using?