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Using CSS classes

Using CSS classes

Using CSS classes

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This kind of code becomes a pain when used repeatedly. A better way is to define these styles once and reuse them using CSS classes. Let’s learn how.


📦 What Is a CSS Class?

A CSS class is a named collection of styles that you define once and apply to any HTML element using the class attribute.

Think of it like a style kit: you build it once and reuse it across multiple elements.


🧩 Basic Structure of a CSS Class

To write a CSS class, we use the <style> tag inside the <head> section of our HTML.

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🔍 Breakdown of Code

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    This helps you apply consistent styling across your page without rewriting CSS repeatedly.


    📚 Best Practices

    • ✅ Use descriptive class names (e.g., .main-header, .error-message)

    • ✅ Keep your styles in the <style> tag or better yet, a separate .css file

    • ❌ Avoid inline styles unless necessary


    📝 Assignment

    Create a webpage with the following:

    1. A CSS class named .highlight that:

      • Changes text color to white

      • Sets background color to blue

      • Adds padding of 10px

    2. Use this class in:

      • One <div>

      • One <p>


    Assignment Answer Key

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    🌐 Want to Learn More?

    Check out:

    🚀 Why CSS Classes Matter & Where to Go Next

    Learning to use CSS classes is a game-changer in your journey as a web developer. Instead of repeating yourself over and over, you now have a smarter way to keep your code clean, organized, and easy to update.

    Think of CSS classes like having your own set of tools. Once you build a style you like, you can reuse it anytime, anywhere — just by calling its name. That’s not just convenient — it’s professional.

    This is how real-world websites are built: reusable components, scalable design, and efficient code. You’ve just taken your first real step into that world.


    🧭 Where to Go Next?

    Ready to level up your skills? Here’s what you can explore next:

    • External Stylesheets: Learn how to move your CSS into a separate .css file for even cleaner structure.

    • Multiple Classes on One Element: Did you know you can combine CSS classes?

    • CSS Layouts (Flexbox & Grid): Take control of how your content is arranged on the page.

    • Responsive Design: Make your pages look great on mobile, tablet, and desktop.

    • JavaScript + CSS: Add interactivity by dynamically changing classes with JavaScript.

    🛣️ Your learning journey is just getting started — keep exploring, keep building, and have fun!

Bernard Aybout's Blog – MiltonMarketing.com

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