HTML and CSS Foundations
HTML and CSS Foundations
8 topics
1
Introduction to HTML: The Language of the Web
What is HTML?
Basic HTML Document Structure
Common HTML Tags (Headings, Paragraphs, Links)
Semantic HTML and Accessibility
HTML Attributes
Practice Questions
2
HTML Structure and Semantics: Building Meaningful Content
Lists (Ordered and Unordered)
Tables for Data Presentation
Forms and Input Elements
HTML5 Semantic Elements (Header, Nav, Main, Footer)
Structuring Content with Divs and Spans
Practice Questions
3
Introduction to CSS: Styling Your Web Pages
What is CSS?
CSS Syntax and Selectors
Inline, Internal, and External CSS
Basic Styling Properties (Color, Background, Font)
The CSS Box Model
Practice Questions
4
CSS Selectors and Properties: Precise Styling Control
Element, Class, and ID Selectors
Descendant and Child Selectors
Pseudo-classes and Pseudo-elements
Styling Text and Typography
Working with Units (px, em, rem, vw, vh)
Practice Questions
5
CSS Layouts: Positioning and Display
The `display` Property (block, inline, inline-block)
CSS Positioning (static, relative, absolute, fixed, sticky)
Floats and Clearing Floats
Introduction to Flexbox
Introduction to CSS Grid
Practice Questions
6
Responsive Web Design with CSS
Understanding Viewports and Devices
CSS Media Queries
Fluid Grids and Flexible Images
Mobile-First vs. Desktop-First Approaches
Common Responsive Patterns
Practice Questions
7
Advanced CSS Techniques and Visual Effects
CSS Transitions and Animations
CSS Variables (Custom Properties)
trabalhar com `calc()` and calc-based values
Styling Forms and Interactive Elements
Introduction to CSS Preprocessors (Sass/Less - conceptual overview)
Practice Questions
8
Best Practices and Workflow for HTML & CSS
Writing Clean and Maintainable HTML
Organizing and Structuring CSS
CSS Naming Conventions (BEM, SMACSS - overview)
Browser Developer Tools for Debugging
Web Performance Considerations for HTML/CSS
Practice Questions
What is HTML? • HTML stands for HyperText Markup Language, the standard language for creating web pages. • It's fundamental for structuring content, telling browsers what text, images, and other elements mean. • HTML uses tags to define and organize content elements on a webpage. • Used by all websites to display information and create the basic layout. • Think of it as the blueprint for every website you visit online. • Always ensure tags are correctly opened and closed for proper rendering.
Key points: - HTML is the backbone of web pages. - It defines content structure, not appearance. - Uses tags to mark up elements. - Essential for web development basics. - Crucial for search engine indexing. - Consistent tag usage is key.
Example: Imagine a book: HTML defines chapters, headings, paragraphs, and images.
Basic HTML Document Structure • An HTML document has a standard setup with key foundational tags. • This structure helps browsers understand and render your webpage correctly. • Includes <!DOCTYPE html>, <html>, <head>, and <body> for organization. • Use this structure for every HTML file you create. • The <head> contains meta-information, while <body> holds visible content. • Always start with <!DOCTYPE html> for modern browser compatibility.
Key points: - Standard structure is essential. - <!DOCTYPE html> declares the document type. - <html> is the root element. - <head> holds metadata and title. - <body> contains all visible content. - A well-structured page is easier to manage.
Example: <!DOCTYPE html> <html> <head> <title>My First Page</title> </head> <body> <h1>Hello World!</h1> </body> </html>
Common HTML Tags (Headings, Paragraphs, Links) • These tags structure text and enable navigation on web pages. • Headings (<h1> to <h6>) organize content hierarchy for readability. • Paragraphs (<p>) define distinct blocks of text content. • Links (<a>) connect users to other pages or resources. • Use headings to outline your content logically for users and search engines. • Always close your tags properly to avoid rendering issues.
Key points: - Headings structure content hierarchy. - Paragraphs contain blocks of text. - Links enable navigation between pages. - Use tags appropriately for clarity. - Search engines use headings for understanding content. - Ensure all tags are closed.
Example: <h1>Main Title</h1> <p>This is a paragraph of text. Learn more by visiting <a href="https://example.com">this site</a>.</p>
Semantic HTML and Accessibility • Semantic HTML uses tags that describe the meaning of the content. • It improves accessibility for users with disabilities and search engine understanding. • Tags like <header>, <nav>, <main>, <footer> provide context. • Use semantic tags whenever possible to make pages more meaningful. • This makes your website usable with screen readers and assistive technologies. • Choose the most descriptive tag for each piece of content.
Key points: - Semantic tags convey meaning, not just presentation. - Improves accessibility for users with disabilities. - Enhances SEO by helping search engines understand content. - Use specific tags like <nav>, <article>, <aside>. - Makes code more readable and maintainable. - Prioritize semantic structure over just appearance.
Example: <header> <h1>My Website</h1> <nav> <ul> <li><a href="/">Home</a></li> <li><a href="/about">About</a></li> </ul> </nav> </header> <main> <p>Content goes here.</p> </main> <footer> <p>© 2023</p> </footer>
HTML Attributes • Attributes provide additional information about HTML elements. • They are always placed inside the opening tag of an element. • Attributes consist of a name and a value, like name="value". • Attributes control element behavior, add identifiers, or specify sources. • The href attribute for links and src for images are common examples. • Ensure attribute values are enclosed in quotes for consistency.
Key points: - Attributes add extra details to elements. - They are always in the opening tag. - Follow the name="value" format. - Essential for linking, image sources, and more. - Provide descriptive alt text for images. - Quote attribute values for reliability.
Example: <a href="https://www.example.com" target="_blank">Visit Example</a> <img src="image.jpg" alt="A descriptive image caption">
Quick quiz: 1. What is the primary purpose of HTML in web development? 2. Which of the following is the correct basic structure for an HTML5 document? 3. Consider the following HTML snippet: <a href="https://www.example.com">Visit Example</a>. What is the purpose of the href attribute? 4. Which HTML tag is semantically the most appropriate for marking up a main title of a webpage or section? 5. A common pitfall for beginners is using <b> or <i> tags for emphasizing important text or making it italic. What is a more semantically correct approach for these scenarios, considering accessibility?
In this topic
1
What is HTML?
2
Basic HTML Document Structure
3
Common HTML Tags (Headings, Paragraphs, Links)
4
Semantic HTML and Accessibility
5
HTML Attributes
Practice Questions
5 questions