Website is displaying squashed up

Hi,

I’m using the Spacious Free theme along with WP version 4.1.1 on two websites.

One site is fine the second site appears squashed up and the WP dashboard in the admin area is showing in three columns, it displays in two columns on the site that looks normal, and the text is much smaller in the WP dashboard of the second site than the first site.

I’ve obviously changed one of the settings somewhere on the second site but can not work out what I’ve done. I’ve gone through everything carefully to compare the settings and they all appear the same.

I’ve tried resetting the theme to Twenty Fifteen and disabling all the Plugins but that made no difference.

Here are links to the two sites so you can see the difference:

• First site: https://www.kea-hr.co.uk
• Second site: https://www.readytogohr.co.uk

Can anyone offer any advice?