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how do i write all the css for a web page on one css document?

i am coding my first website and i just got to the second web page of my website. how do i write all the css on one css document and not have it interfere with the styles of other pages of my site?

3 Answers

Linas Mackonis
Linas Mackonis
7,071 Points

There is another thing called specificity. Imagine you have the same two sections, but populated with more elements:

<section class='section-for--about'>
<h2>Heading for About Page</h2>
<section class='section-for--contact'>
<h2>Heading for Contact Page</h2>

In order to target the p tag in about page section you can write in your CSS

.section-for--about p

It will target only p tag(s) under this section. CSS specificity works by the matching principle. F.example, if I write:

.myAwesomeClassName nav ul li span

So, it will target only those span elements that also meet the before mentioned conditions i.d are placed in li, which is placed in ul, which is placed in nav etc.

Have some time and play with these concept around!

Brendan Whiting
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,734 Points

If you have an about page, you could have about.html and it would link to a css file about.css. And you could have a portfolio.html that links to portfolio.css. Then they're totally separate.

i meant document sorry

Linas Mackonis
Linas Mackonis
7,071 Points

You can name each element with different classes. Let's say you have two <sections>, one for about page and the other for contact page. You can give them descriptive classes:

<section class='section-for--about'>Content goes here</section>
<section class='section-for--contact'>Content goes here</section>