As you continue learning HTML, CSS and JavaScript, keep practising and experimenting. You will gain confidence and improve your coding skills. This is a creative playground, so play around, try ...

Web apps, obviously, benefit from a huge selection of tools, frameworks, and extensions. Several cross-platform mobile application frameworks are using HTML for UI design, and even desktop apps can ...

Output: The results of executing the CSS, HTML, and JavaScript entered into the sections of the page. Figure A shows jsFiddle loaded in Internet Explorer 9 with empty code panes.