Select Gallery from Content type, and then click on the Select Image to insert images into the gallery.
Just paste your Video URL to the text box and click Save & Close to check on the frontend.
Standard type works in the same way with the image tag.
To use Standard Type content, go to an article → Sun Framework options → Select Standard → click on the Featured Image box to select an image for articles.
In Sun Framework option → Select Audio type → add your Audio Embed Code.
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After selecting Quote type, enter Quote Text and Quote Author in the text box. Then, click on the Save & Close button.