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Firefox 'Responsive design mode' is wrong?

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Trying to test our new site using this product's 'responsive design mode'.

The problem is that testing on the actual device - in this case iPhone 6 Plus - displays different styling to this browser?

Case in point is the carousel i am building. If i set Bootstrap spacing to center text vertically at the breakpoint which the iPhone registers, the spacing changes drastically when i view it on the actual device? It shunts the text up well behind the previous element so that it is illegible.

Not sure what i am doing wrong here. Stock Safari iOS browser, no plugins, nothing.

Trying to test our new site using this product's 'responsive design mode'. The problem is that testing on the actual device - in this case iPhone 6 Plus - displays different styling to this browser? Case in point is the carousel i am building. If i set Bootstrap spacing to center text vertically at the breakpoint which the iPhone registers, the spacing changes drastically when i view it on the actual device? It shunts the text up well behind the previous element so that it is illegible. Not sure what i am doing wrong here. Stock Safari iOS browser, no plugins, nothing.

All Replies (2)

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Yeah i have.

This is mozilla's own website so i would expect feedback from here but i guess not.