Theme Boxxie, Anomaly, content comes out of container when zooming in

I have noticed is that if I zoom in (ctrl+), the blocks inside the page.content get out of the container, Is there a way to correct that?

FYI it does not only happen with the boxxie theme, I tried Anomaly and the same thing happens. Maybe it is the page.content css rule that does not allow for the design to adjust to zooming. #page-content

{clear: both;float: left;overflow-x: hidden;overflow-y: hidden;position: relative;width: 100%;min-width: 900px;}