Question: "I set a border width using the photo editor tool but nothing is showing."
The photo editor in the TinyMCE does not have specific fields for border color and border style.
You will need to add these attributes in the Advanced tab or define them in the HTML code view.

Example: <p><img style="float: center; border: 5px solid black;" title="Curious Chipmunk" src="/files/2196/" width="500" height="280" ></p>

More info on manually adjusting your border appearance can be found on this great online resource: https://www.formget.com/ css-border-property/
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