Safari > Share> Email This Page: Rendering issue

Hello,

A user has found an odd issue which I hope to get some support on how to rectify.

When using Safari, and clicking on the “share” button (in top right corner), and then “Email This Page”, it opens up the Apple mail client and then shows a link and a preview of the website in the email.

The preview of the website is looking very poor since all the formatting and font sizes are off an overflowing.

How can I fix and test this? I.e. what preview setting can I look at in order to make sure that this sharing method is rendering the website correctly?

Any help would be much appreciated!


Here is my site Read-Only: [[LINK]]