Content moves around

[eshops]

Hi,

Can anyone assist with this weird on screen behaviour. I have downloaded the latest version of Preastahop, and without making any alterations, have tested the CTRL - and CTRL + keys in Firefox to see how the site scales when it is made smaller or larger.

What i find is after pressing the CTRL - key 3 times, the home page item on the right hand side of the 4 items on the home page gets shifted onto a new line, as though the CSS has an issue whereby it has forced the 4th item onto a seperate line of its own.

Hoping someone can explain what is causing this, as I've played with the CSS and cannot determine why this behavious is occuring. Obviosuly the ideal is to have the page all stay intact and look the same no matter what scale size it is shrunk or enlarged to.

thanks in advance
eshops!