Hide sidebar and show only image in popup

Before - default popup layout

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After applying snippet - sidebar is not showing
<script type="text/javascript">
    // when gallery is ready
    document.addEventListener('galleryReady:covetPics', function(e) {
      // prepare CSS styles to inject
      // this CSS hides sidebar in Covet.pics popup
      const stylesPopup = document.createElement( 'style' )
      stylesPopup.innerHTML = `
          .popup .popup-body {
            display: none;
          }
      `
      // get Covet gallery elements where you want to inject (for eg. covet-pics-popup)
      const popup = document.querySelector("covet-pics-popup");
      // inject CSS styles
      popup.shadowRoot.appendChild(stylesPopup);
    });
  </script>