The open Web presents incredible opportunities for developers. To take full advantage of these technologies, you need to know how to use them. Below you'll find links to our Web technology documentation.
Performance — Firefox Source Docs documentation Firefox Source Docs Quick search Overview A Glossary of Common Terms A Quick Guide to Mozilla Applications Getting Started Getting Set Up To Work On The Firefox Codebase Working On Firefox Working on Firefox Bug Handling Firefox User Guide Firefox...
Storage Inspector — Firefox Source Docs documentation Firefox Source Docs Quick search Overview A Glossary of Common Terms A Quick Guide to Mozilla Applications Getting Started Getting Set Up To Work On The Firefox Codebase Working On Firefox Working on Firefox Bug Handling Firefox User Guide...
Default styles for h1 elements are changing | MDN Blog Skip to main content Skip to search MDN Web Docs Open main menu References References Overview / Web Technology Web technology reference for developers HTML Structure of content on the web CSS Code used to describe document style JavaScript...
Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in HTML or XML (including XML dialects such as SVG, MathML or XHTML). CSS describes how elements should be rendered on screen, on paper, in speech, or on other media.
A progressive web app (PWA) is an app that's built using web platform technologies, but that provides a user experience like that of a platform-specific app.
A web application manifest, defined in the Web Application Manifest specification, is a JSON text file that provides information about a web application.
A scroll container is an element box in which content can be scrolled, whether or not scroll bars are present. A user agent adds scroll bars to an element box to make it a scroll container when the CSS overflow property is set to scroll or...
Settings — Firefox Source Docs documentation Firefox Source Docs Quick search Overview A Glossary of Common Terms A Quick Guide to Mozilla Applications Getting Started Getting Set Up To Work On The Firefox Codebase Working On Firefox Working on Firefox Bug Handling Firefox User Guide Firefox...
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