PUBLIC MARKS from decembre with tags interface & browser

You need to install the Test Pilot extension and the Firefox Color experiment to get started. You may do so in Firefox Stable or any other version of the browser that is supported by Mozilla. Color opens a special interface after installation which you interact with to create the theme and save or share it. The Firefox Color website displays several interactive elements on the page that depict browser UI elements.

If you are using Firefox Nightly right now, you may have noticed that the latest update of the web browser disabled all legacy add-ons. Firefox Nightly is the first version of the Firefox web browser that hit version 57, the version of Firefox that drops support for so-called legacy add-ons in favor of WebExtensions.

you can use Firefox menu->Developer->BrowserToolbox to examine UI elements and play with CSS. After you open it, click OK in the main browser window, wait a few seconds for the toolbox to initiliaze, then use the first button in its toolbar to pick an element (bookmarks button in your case).

This is a alternative interface to browse the Official jQuery Documentation that can be found on GitHub . The aim of this project is to get out of the way of your development work. Quickly switch to this docs and find what you are looking for.

You can inspect the Firefox user interface directly with DOM Inspector. (Which is not the same Inspector as in the Web Developer menu.) [addons.mozilla.org] https://addons.mozilla.org/en-US/firefox/addon/dom-inspector-6622/Click the icon in the upper-left corner of DOMi, the one with a pointer on it, then click anywhere in the browser to select an element; that element will be highlighted in the left column. Right-click the highlighted entry to display a context menu: "Copy Selector" suggests selectors for the element, "Set Pseudo-classes..." lets you switch on :hover. Notice that the browser itself is a document with its own URI, chrome://browser/content/browser.xul, Most of the browser chrome is XUL, but some, such as the Stylish editor, is HTML embedded in XUL. https://developer.mozilla.org/en-US/docs/XUL

Hyperwords allow you to interact with all the text on the web.