body {
  --cssx-children: load-btn output-container;
}

#load-btn {
  --cssx-on-click:
    add-class(load-btn, 'loading')
    get('./more-style.css')
    add-class(load-btn, 'hidden');
}
#load-btn.loading {
  pointer-events: none;
  opacity: 0.4;
}
#load-btn.hidden {
  display: none;
}

#output-container {
  --cssx-children: output-container-content;
}