CSS

  • A Complete Guide to CSS Media Queries
    https://css-tricks.com/a-complete-guide-to-css-media-queries/

    Comprehensive tutorial from CSS-Tricks that explains CSS media queries, including plenty of examples.

  • Bootstrap 4 Tutorial - W3Schools
    https://www.w3schools.com/bootstrap4/

    W3Schools tutorial and reference on Bootstrap 4, one of the most popular Web frameworks for developing mobile-friendly websites using responsive design. Requires basic knowledge of HTML and CSS.

  • CSS Tutorial & Reference - W3Schools
    https://www.w3schools.com/css/

    Tutorial and reference website for all things related to Cascading Style Sheets (CSS). Each page includes a "try-me-out" section so that you can experiment with different styles on web page fragments.

  • CSS/HTML Standard Colors
    https://www.w3schools.com/colors/colors_names.asp

    W3schools list of colors supported by all major browsers. Includes color names, hex codes, and swatches.

  • Font Awesome: Free Icons
    https://fontawesome.com/search?m=free&o=r

    Searchable gallery of all free Font Awesome icons

  • HTML & CSS Code Samples (Duckett)
    http://www.htmlandcssbook.com/code-samples/

    HTML & CSS examples from Jon Duckett's book HTML & CSS: Design and Build Websites. To view the HTML and CSS behind each web page, right-click on the page and choose View Page Source.

  • Intro to HTML & CSS @ Khan Academy
    https://www.khanacademy.org/computing/computer-programming/html-css

    Series of tutorials from Khan Academy on building web pages with HTML and Cascading Style Sheets (CSS). Covers basic and advanced HTML markup, as well as CSS for styling text, creating page layouts, and choosing specific parts of a web page based on relationships.

  • Learn CSS Layout
    http://learnlayout.com/

    Step-by-step tutorial that walks you through the fundamentals of using CSS and HTML for web page layouts. Assumes you have working knowledge of HTML and basic CSS.

  • Learn to Code HTML & CSS
    http://learn.shayhowe.com/html-css/

    Free, online version of the Learn to Code HTML & CSS book covering the fundamentals of web page design. Includes chapters on the box model; positioning content; typography; backgrounds; gradients; lists; forms; tables; and best practices.

  • Qt: Style Sheets Examples
    http://doc.qt.io/qt-5/stylesheet-examples.html

    Qt documentation page with many examples of using a style sheet to control the appearance of GUI widgets. Particularly helpful as a reference for Qt-specific CSS selectors.