Mobile first responsive page

What challenges did you encounter, and how did you overcome them?

I had trouble making the share window popup outside of preview card.

• I had to make overflow possible for that to happen. But then, the image and other items like popup active in mobile screen would overflow at corners neglecting the border radius.
• I still think my solution is half-baked.

I feel like I overcomplicated the CSS part

• maybe I should have tried making it more clean or using multiple classes for styling complex elements instead of pushing styles down the throat to one single class.

What specific areas of your project would you like help with?

the Popup implemntation

making the structure cleaner or a overall better structure

And someone suggest me how do you pick semantically correct elements?

How do you pick class names and nested class names?