I have a WordPress site I put together a few years ago. The pages have always rendered fine on my computer (MacBook) using Firefox, Safari or Chrome. However, it has always been a little jumbled on my wife's (PC - Firefox - ads missing) and I have even had a few messages from individuals saying it was rendering improperly for them - didn't take them seriously because they came across as spam.
But, the problem persists on my wife's computer and I'm wondering how many others might be experiencing the same and what I can do to fix that.
I have validated my site using the validator and there are problems but I'm not sure what to do with the information.
Does anyone have a word of direction that might help.