HTML and CSS work together to create modern websites.
HTML builds the structure.
CSS controls the design.
Understanding the Relationship
Think of HTML as the skeleton of a body.
CSS is the clothes and appearance.
What Happens in the Browser
When a browser loads a page:
1. It reads the HTML first.
2. Then it applies CSS styles.
3. Finally, it displays the styled page.
Why CSS Is Separate from HTML
Separating design from structure:
- Keeps code clean
- Makes changes easier
- Helps teamwork
This HTML creates content but has no styling.
CSS changes how the same HTML looks.
How CSS Finds HTML Elements
CSS uses selectors to choose which HTML elements to style.
Simple Example
The selector h1 means:
Style all heading elements.
Why This Matters for Jobs
Understanding how CSS works with HTML is a core frontend skill.
Every web project uses this relationship.
Common Beginner Mistakes
- Mixing too much CSS inside HTML
- Forgetting to connect CSS files
- Writing styles but not seeing changes
Practice Task
Create a small HTML page and:
- Add one heading
- Add one paragraph
Then imagine how you would style them with CSS.
What You Will Learn Next
In the next lesson, you will learn CSS syntax: selectors, properties, and values.