Side bar drop

Edit this post only:
https://www.espanglo.co.uk/?p=11

Turn the editor OFF (Users > Your profile > scroll to bottom)

Then very carefully count how many
<div>
are there, and how many
</div>

If you want, copy the whole post and paste it at this location: https://pastebin.com

Then we can check things out for you.

I think I’ve done what you asked?

https://pastebin.com/681234

Thanks for that.
In Options > Writing, is this box checked?
WordPress should correct invalidly nested XHTML automatically

And can you say whether you wrote the original post with or without the editor on?

‘WordPress should correct invalidly nested XHTML automatically’

is Unchecked

And if you mean the first editor you told me to turn off, I’ve never touched it, so always on

Check that box…..
Then edit each post on the front page (just put an extra space in. This will make it resave and also put the right tags in place).
Then we’ll see what happens?

I added an extra . to each post on the main page and saved, still no different – though out of about four themes one seems to be working alright – at the moment at least!