Gridbox Issues in phone view (landscape)

In the footer of the site (link bellow) I’m using a gridbox (3 rows, one column) to layout the contact 3 details. The problem I’m having is in phone landscape view from 486px wide to 480px. It creates another row and throws the content in column 3 into row two, column 1 even though the content isn’t too to fit the column its supposed to stay in. The contents position is on manual but cannot be moved as it still says its in column 3 row 1.

Any ideas as to whats going wrong here?

Kind regards

Here is my site Read-Only: