Incorrect display of elements on iPhone and MacBook

Hello! Help me please!
There are 9 cards on the site. When you click on the plus sign below, the card opens. In an open card on Android devices and Windows, there is a minus icon at the bottom.

But for some reason, in safari and on an iPhone in an open card, instead of a minus plus, it is blurry. It’s like doubling.

I’ve checked everywhere and can’t figure out what the problem is. Please, help! :pray:

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