- HTML should be used only for structuring content.
- Cascading Style Sheets should be used for applying all visual styles.
How HTML, CSS and JS work together
The web page you see in your browser may be a combination of structure, style and interactivity.
- marks the content up into different structural types, like paragraphs, blocks, lists, images, tables, forms, comments etc.
- tells the browser how each type of element should be displayed, which may vary for different media (like screen, print or handheld device)
- tells the browser how to change the web page in response to events that happen (like clicking on something, or changing the value in a form input)
The 2 most important things to learn about web page production are:
- Use the correct HTML tags that mean what they say.
1. Use HTML properly
Different HTML tags describe the structure of content.
Each one has its own meaning, and you should only ever use each one in accordance with its meaning, and in its proper place.
When people talk about “semantic” HTML, this is what they mean.
In the HTML section, I’ll explain what each tag means, and where it’s OK to use it.
2. Keep ’em separate
There are lots of good reasons for this, the main ones being:
- It’s more logical and simpler. And simple is good.
- Easier management: Keeping all your styles and functional code in one place makes it quicker, easier and safer to change in future.
- Easier re-purposing: It’s easier to design your web site to look or work differently on different user agents (e.g. handheld browsers, audio browsers, or TV)