HTML & CSS

Learn why SVG is superior to pixel graphics in terms of scalability, responsiveness, interactivity, programmability, performance, and accessibility.

Asha and Maria offer an accessible but thorough introduction to the use of CSS viewport units for truly responsive typography and layout elements on the web.

Maria Antonietta Perna rounds up 30 top tools for front-end web developers, from code playgrounds and editors to CSS generators, JS libraries, and more.

Master modern CSS with these project suggestions, starting with the easiest and designed to build a breadth of skill in modern techniques.

Maria Antonietta Perna highlights the benefits of lazy loading images on websites and shows five approaches to implement lazy loading for your website.

Craig Buckler presents the various CSS methods available for hiding elements on a web page, looking at how they differ and which is best when.

Craig Buckler demonstrates a neat trick for applying CSS3 transforms to background images. Rotating and skewing elements with stunning backgrounds will now be a breeze!

Craig Buckler reviews the art of creating printer-friendly web pages with CSS, showing how to retrofit them to any site, at minimal cost, without affecting or breaking existing functionality — delighting users and raising your site above competitor sites.

Adrian Sandu explains the purpose and advantages of rem units, demonstrating ways to use em and rem units in CSS layouts.

Learn how to use Tailwind, a highly customizable CSS framework that offers more flexibility and freedom than frameworks like Bootstrap and Foundation.

Akshay Kadam introduces Styled Components, a JS-based means of adding styles to your React project, and then shows how to use them in practice by imitating the Unsplash interface.

Want to design your CSS Grid layouts in a few clicks and grab the code? Here are five CSS Grid generators with great visual interfaces.

Our CSSBattle Code Challenge requires some 'outside the square' CSS thinking. Here are four tips to get you started on the right track.

SitePoint's Code Challenge #2 is a battle of CSS wits. We're partnering with CSSBattles.dev and asking you to recreate the SitePoint Logo in HTML and CSS - oh and in the fewest possible characters too.

The user interfaces we see in popular culture are often more fun than ones we build at work. Here's a code challenge to show us how you'd build your own.

Pug is a preprocessor that speeds up writing HTML. Learn the syntax and features by building a simple Node project with Pug.

Learn how to migrate to Gulp.js 4.0 and update your 3.0 gulpfile.js configurations. Find out what you need to know about changes in Gulp.js functionality.

In this series on troubleshooting and optimizing your CSS, Tiffany Brown looks at ensuring code efficiency with the CSS Optimizer (or CSSO), a minification tool that runs on Node.js and which makes sure our file sizes are as small as they can be.

In this series on troubleshooting and optimizing your CSS, Tiffany Brown delves into the browser-based developer tools for Chrome, Safari, Firefox, and Microsoft Edge, covering the styles panel, cascade and inheritance problems, spotting invalid properties and values, and debugging responsive layouts.

In this series on troubleshooting and optimizing your CSS, Tiffany Brown introduces UnCSS and stylelint, two code-quality tools for analyzing the quality of your CSS.

Tiffany Brown introduces Flexbox, explaining the basic principles behind flex layout, with examples of laying out a basic media object, flexible form components, vertical centering, and creating grid-like layouts, as well as explaining when to use Flexbox over CSS Grid.

Tiffany Brown introduces the basics of CSS Grid, covering the grid formatting context, defining a grid layout, explicit versus implicit grids, specifying track size for an implicit grid, creating flexible grids with flex units, using the grid-template shorthand property, and repeating rows and columns.

Scroll snap lets developers define the distance an interface should travel during a scroll action. You might use it to build slide shows or paged interfaces―features that currently require JavaScript and expensive DOM operations.

Transforms allow us to create effects and interactions that are otherwise impossible. When combined with transitions and animations, we can create elements and interfaces that rotate, dance, and zoom. In this piece, we'll look at 2D transform functions.

Think of CSS animation as the more sophisticated sister to CSS transitions. Animations differ from transforms in a few key ways, which we'll explore in this article

We’ll now look at two methodologies for naming things in CSS: Block-Element-Modifier (better known as BEM) and Atomic CSS.

Variables make it easier to manage colors, fonts, size, and animation values, and to ensure their consistency across a codebase.

Craig Buckler demonstrates how use Gulp.js to automate CSS tasks, such as optimizing images, compiling Sass files, handling and inlining assets, automatically appending vendor prefixes, removing unused CSS selectors, minifying CSS, reporting file sizes, outputting sourcemaps and more.

Ahmed Bouchefra dives into CSS theming, explaining how to use CSS custom properties to create themes and switch dynamically between them with JavaScript, using an HSL color scheme and CSS filters to create a dark version of a light theme.

Diogo Souza walks through how to convert a traditional, float-based layout into one that harnesses the benefits of CSS Flexbox & Grid — while discussing graceful degradation and progressive enhancement along the way.