I have no experience in coding before I begin and post using the visual tab rather than the text one. To insert a table into a post I have always created it in a word document and then copy and pasted into wordpress with no issue for a couple of years. So until a couple of days ago my tables looked like this. After editting the page it now looks this.
If someone could help me revert this back to the former example that would be great as frankly I think it will ruin the look of about 30+ pages on my blog. All the tables are now different sizes , whereas before they were uniform.