ModPageSpeed breaks my button CSS, hide on desktop

So I created a content box with a button that will only show on mobile devices.
The problem is that it will show on both Desktop and Mobile if I use ModPageSpeed.

When I disable ModPageSpeed the button only show up on Mobile devices and works as it should.

Code:

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Code:

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Anyone have any idea why this is happening and how to solve this?

I don't use mod page speed but a quick look at some issues points to caching. Maybe it cached your site before the display none was added for desktop. so now it shows you it in both mobile and desktop. But by tuning it off it works correctly.

That's just a thought, maybe way off .

But on my end viewing your site it seems to work correctly at the moment

I did fix it, it was a caching issue. After a purge it worked perfect :)