How does the browser handle the built-in zoom function?

I found some websites

for example, everyone is a product manager, iview"s official website


font-sizefont-size

csdn

There is a similar problem with the reduction of

csdn

how does csdn do it? For tablets, it is sure that the effect of full-screen magnification will be much better, if you need to achieve a perfect zoom effect, is there anything you need to pay attention to when writing css?


I'm afraid you have a wrong understanding of zooming

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