2025 Edition: Harness the power of HTML5 and CSS to create UIs that work flawlessly on mobile phones, tablets, desktops, and everything in-between. The bestseller, now with color images.Key FeaturesUnderstand what responsive web design is, and learn to design effective, accessible, and future-proof front-end applicationsExplore the newest CSS features like view transitions, scroll-driven animations, P3 colors, and CSS functionsLearn brand-new time-saving additions to the HTML language, including dialogs and modalsBook DescriptionResponsive Web Design with HTML5 and CSS, Fifth Edition, is the very latest, up-to-date version of one of the bestselling books on HTML5 and CSS. It emphasizes pragmatic application, teaching the approaches needed to build websites and applications, with downloadable examples.Written in Ben's friendly and easy-to-follow style, this title can be read as a complete guide, or used as a reference for each topic.If you're a backend dev looking to understand the front of the web stack and its possibilities, or perhaps a frontend dev looking for a comprehensive resource on everything new in HTML and CSS to build the most efficient UIs, this is the book for you. Even if you are deferring your code writing to AI, this book gives you the requisite knowledge to understand the validity and efficiency of AI's output.Among the many topics, we cover approaches for better accessibility, utilizing variable fonts, explainers on the latest color manipulation techniques and functions, in-depth coverage of bleeding-edge features such as scroll-driven animations, view transitions, CSS anchor positioning, CSS layers, container queries, nesting, and much more.By the end, you'll not only have a thorough understanding of responsive web design and what's possible with the latest HTML5 and CSS, but also know how to best implement each technique.What you will learnLeverage color functions to mix colors and convert between color spacesUse media and container queries to detect touch/mouse and color preferenceLeverage HTML semantics to author accessible markupUse SVGs to provide resolution-independent images and learn to efficiently display themCreate animations as items enter and leave the viewport using just CSSDiscover CSS custom properties and make use of new CSS functionsAdd validation and interface elements to HTML formsCheck whether the frontend code produced by AI tools is effective for your goalsWho this book is forAre you a full-stack or backend developer who needs to improve their front-end skills?Perhaps you work on the frontend and need a definitive overview of all that modern HTML and CSS has to offer?Maybe you have done a little website building, but you need a deep understanding of responsive web designs and how to achieve them?Perhaps you are using AI tools to produce code and want to check the output?If any of those scenarios sound familiar, this is the book for you!All you need to take advantage of this book is a working understanding of HTML and CSS. No JavaScript knowledge is needed.