Adding XLS sheet to a page using HTML

I want to put an Excel sheet (just one sheet) onto a single WordPress page. What I’ve done is copy the data on the sheet and converted it into HTML using an online website. This gave me an HTML table.

I opened a new page, clicked on the “text” tab, and pasted in the code. I went to Visual and it looked good so I published and ran the website from the start and, again, it looks good.

I can adjust the column widths via the HTML code, which makes it even better but I’m new to WordPress and wondered if anyone can see any problems with what I’ve done and am doing?

John