HTML and CSS use a box model, which means that page elements include margins, padding, background colors and, optionally, decorative borders. Open your HTML Web page in a text editor such as Notepad.

Key Takeaways Start with basic concepts like selectors, properties, and box model before moving to layouts.Use online tools ...

While HTML5 has been getting most of the attention lately, CSS 3, the other half of the web developer’s toolkit for next-generation web pages has been progressing as well.