I assume it’s a table, because it has cells that I can move the borders on. I was going to look at the source code for the page, but Edge doesn’t have ‘View source’ like Safari does.
I tried that. The image comes out too small unless I scrunch the browser window and then expand it again when I’m done. (I can also make the table fit by scrunching the browser window.) But at that point it’s easier to jump through all of the hoops I’ve posted.
Highlight the table, select Table Properties, and under the Table tab, click the box to align the table to the right. The left half of the table should now be cut off instead of the right, which gives you access to the table size adjustment thingy in the bottom right corner of the table.
A lot simpler, which is why Word was able to paste with just ctrl-v before. However, new HTML editors use the div method nowadays. Word can’t copy the CSS unless you save the HTML in a word doc and make the CSS your style template. That’s way too much trouble for your purposes.