Portfolio project - architecture

Hello,
I’m afraid I’m stuck.
I began this project with the idea of using rows class and col class, as we saw in the cat app.
Then I tried to give a structure to the page using <head>, <body> and so on.
But the css doesn’t work with <head> or <body> to change style.
For example, my background color doesn’t change. It only work with <div> but the whole background color changes instead of only a part of it.
Can anyone could give me some advice about giving structure compatible with css ?
I didn’t have a look at the code source of the examples provided. Do I have to look at it ?
Thank you for helping.

Hello and thank you for your reply.
Yes this is the link to codepen :

I’ve just read again my question and some words disappeared… it’s strange. Every time I mentioned a part of the code, between arrows it has been deleted.
I’m looking for an efficient structure, I would like the style of each part (top, body and bottom) to be modified easily. Do I have to keep the columns or to get rid of them ?
Thanks again.

Hello,

Thank you very much for your help.
I’ll try what you said.
Thank you too for the tricks you gave me on how Codepen works “behind the scene”.

Hello,
I made a new Portfolio including what you show me above :

Unfortunately, the CSS doesn’t seem to work. I cannot change anything.
I’m afraid I didn’t choose the right set of instructions (row, col, …).

Could you give me some advice to use a convenient structure or should I look at the code used in the model page given ?

Thank you for your help.

:face_with_raised_eyebrow::thinking:… Thank you for your useful help… I see the light.:star_struck:
I’ll be back soon.

I still have some work, but it’s better :slight_smile:

Thanks again

Hello Eurisko. I looked at your portfolio page, and it looks like you’re further than me, but I did have a suggestion. I think you mean “Toward a new horizon”, without the s. It’s a small thing, and may be debatable. I’m just looking for ways to help. Btw, I also tried to add “head”.
Looking at your project showed me that I was supposed to be putting things in the CSS area. I am Noob. Thanks.