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Its simple but how would you do it?

So I know this is supposed to be extremely simple but I wanted to know, how would you go about making this simple layout which is seen in this Webflow tutorial video. bearing in mind it needs to scale for large and small displays.

Like how would get two squares red and white and the third photo element overlapping. I can think of a couple of ways but I want to understand what’s the best design practice.

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