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Found so much trouble while fixing the image model, button & mobile responsive. I am unsure of what I have done with the main image positioning.

I will make it responsive afterward.

Kindly suggest to me how to make it mobile-responsive. I'm just fed up with making it mobile-responsive. please help so that I can correct it.

I found difficulties while giving height and width, like how do I know the exact height & width of the box. I just did experiments to look like same as the image. It is straightforward. but if you are a pure beginner like me then you will find it difficult in the starting. but just keep doing it to learn & gain.