CSS Injection

client?.injectCustomCss({
  type: 'styles',
  value: `
    .modal-div.dialog .modal-author__name {
      font-size: 10rem !important;
      background-color: green !important;
      color: white !important;
    }
  `
});

client?.injectCustomCss({
  type: 'link',
  value: '/relative_path_to_css/styles.css' // you could also pass the absolute link: 'https://yourappdomain.com/pathtocss/styles.css'
});