What is the difference between block-level and inline elements in HTML and CSS?

Block-level elements start on a new line and typically take the full available width, while inline elements flow within text and only take up the space their content needs.

How are HTML IDs used with CSS selectors?

An ID uniquely identifies an element on a page and can be styled in CSS with a # selector, such as #header.

What topics are covered in the 22-hour full stack web development course?

The course introduces full stack web development from scratch and explains core HTML and CSS concepts, including element display types, IDs, and block versus inline behavior.

Free Course Image Learn Full Stack Web Development

Free online course Learn Full Stack Web Development

Duration of the online course: 21 hours and 48 minutes

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Build job-ready full stack web skills with this free online course—HTML, CSS, and real page structure essentials, plus a shareable certificate option.

In this free course, learn about

Core front-end stack: HTML structure, CSS styling, and JavaScript basics
Back-end fundamentals: servers, APIs, databases, authentication, and deployment flow
Full-stack project workflow: build, connect front end/back end, test, and ship
Block-level vs inline elements: how they render, size, and affect document flow
Default display behavior and how CSS display changes layout behavior
How block elements use full width and start on a new line; inline elements flow in-line
When to choose block vs inline elements for layout, content, and UI components
Purpose of IDs: unique element targeting for CSS, JS hooks, anchors, and accessibility

About the free online course

Want to create modern websites from scratch and understand how the front end really works? This free online course helps you develop practical, job-ready full stack web development foundations by guiding you through the building blocks that power every webpage. You will learn how HTML and CSS shape structure, layout, and presentation, so you can move beyond copying snippets and start building with confidence.

You will begin with a full-length learning experience designed to take you from beginner to someone who can read, write, and troubleshoot real web pages. Along the way, you will strengthen the skills that often decide whether a layout feels solid or frustrating: knowing when an element should behave as a block and when it should behave inline. That difference affects spacing, alignment, width, height, and how content flows across the screen, which makes it essential for everything from simple landing pages to larger web interfaces.

The course also highlights why IDs matter and how to use them correctly in HTML and CSS. Understanding IDs helps you target specific elements precisely, connect styles reliably, and build a cleaner workflow as your pages grow. You will see how display characteristics influence design decisions, and you will gain a clearer mental model of the browser’s layout behavior, making it easier to debug issues that beginners commonly face.

Because the lessons are focused on fundamentals, the skills you develop translate well into broader full stack goals. Once you can structure content properly and style it predictably, you will be in a strong position to continue into responsive layouts, JavaScript interactions, frameworks, and back-end concepts. If you are exploring a career switch, building a portfolio, or simply learning web development for personal projects, this course offers a clear, beginner-friendly path to real capability and momentum.

Course content

Video class: Full Course Web Development [22 Hours] | Learn Full Stack Web Development From Scratch 21h48m
Exercise: What are block-level elements and inline elements in CSS, and how do they differ?
Exercise: What is the purpose of using IDs in HTML and CSS?
Exercise: What are inline and block elements in HTML/CSS?
Exercise: What are the two types of HTML elements discussed based on their display characteristics?
Exercise: What distinguishes block elements from inline elements in HTML?
Exercise: What are the key differences between block elements and inline elements in HTML?

Free online courses on Full Stack Web Development

Learn aboutFull Stack Web Development

Explore free online Full Stack Web Development courses with certificates and learn to build modern, responsive websites and applications. Develop job-ready skills in HTML, CSS, JavaScript, front-end frameworks, back-end programming, databases, APIs, Git, and deployment through flexible, self-paced training for beginners and aspiring developers.