Related sites:

• htmlcodetutorial.com

  HTML For Beginners And Veterans Made Easy – Start Learning Today »

  

• css3.com

  CSS3.com - A comprehensive CSS 3 reference guide, tutorial, and blog

  

• techglimpse.com

  Techglimpse.com - Linux, WordPress, HTML, CSS Tutorials and Guides

  

• cssreset.com

  CSS Reset - 2019's most common CSS Resets to copy/paste, with documentation / tutorials

  

• appdemostore.com

  AppDemoStore - Interactive App Demos & Tutorials

  

• uml-diagrams.org

  Unified Modeling Language (UML) description, UML diagram examples, tutorials and reference for all types of UML diagrams - use case diagrams, class, package, component, composite structure diagrams, deployments, activities, interactions, profiles...