First, log in to your Wix website. Then add a new “Section to Page” and then add the "HTML Embed" block to your webpage.
Then, pick and select the layout for the embedded section.
Next, click on the “Settings” button next to HTML.
Then, copy and paste the URL for your giving form into the "Website Address" field. Note: Not the embed link, just the URL for the giving form. Then resize the "Embed a Site" block so that your giving form appears as desired. Make sure you give the form enough length so as the form expands donors can see the entire form.
Then Publish your changes.