One can immediately see the problem. For the following .csv file using commas as delimiters, the commas inside the style attribute separating font families are being wrongly read is a delimiter, causing html to be delimited at that point.
Hi!
It may happen because HTML data you scrape may contain quotes/commas/etc that will result in problems when importing CSV file into Excel.
You can try to select Data Preview data and then copy-paste it straight into Excel, but if you're after bunch of pages then you will have to narrow your selectors to get data different way than extracting plain HTML. For example, using Element Attribute selector to extract attributes and classes.