# Cascade is a keyboard centred userChrome theme whose maintainer has asked for a replacement > Cascade is an MIT licensed CSS theme for Firefox userChrome that removes default interface clutter and is built around keyboard use, documented on a GitHub Pages site rather than in the repository. Its maintainer has publicly stated that the project went stale and is looking to move it to an organisation so someone else can take it on. **cascadefox/cascade** — A responsive One-Line CSS Theme for Firefox - Repository: https://github.com/cascadefox/cascade - Website: https://cascadefox.github.io - Stars: 1,604 · Forks: 143 - Language: CSS - License: MIT - Published: 2026-10-16 · Updated: 2026-10-16 · Language: en - Canonical page: https://hysenlabs.com/projects/cascadefox-cascade ## The handover note is the first thing in the README The README opens with an apology, and it is worth reading closely because it changes how everything after it should be read. The maintainer writes that the repository got quite stale, and gives two reasons. Time is not available to iron out bugs, and Firefox updates have broken things. Then a third reason that is more fundamental: the maintainer has switched to another browser which already offers several of the features they wanted from Cascade, by default and better than Firefox could have provided them. The stated plan is to move the repository to an organisation so potential new maintainers have an easy transition, and the README invites people to reach out through a discussions thread for that. The closing line is the honest summary: y'all deserve better than my on-off relationship with this theme. That is a status report, not a press release. Anyone evaluating this repository for adoption should treat it as a finished artefact looking for an owner rather than as a project with a roadmap. The last push was on 2026-05-23 and the latest tagged release is v2.7.6 from 2022-04-15, with v2.7.4 before it. ## A theme whose substance is CSS in a chrome directory The repository is small and the listing describes the whole thing. There is a chrome/ directory, an integrations/ directory, an assets/ directory holding the preview image, and four markdown files at the root: the README, contributing.md, code_of_conduct.md and the LICENSE. The primary language is CSS and the repository description calls the project a responsive one-line CSS theme for Firefox, which sets expectations precisely. There is no build step, no package manager and no compiled artefact in the listing. What you apply to your browser is stylesheets. The chrome/ directory name is the giveaway about how it works. This is a userChrome theme, meaning the styles apply to the browser's own interface rather than to web pages, and the Firefox install badge in the README points at an installation page on the project's site rather than at a download from GitHub releases. That is a deliberate distinction: distributing a theme through the browser's own theme mechanism is different from shipping a zip in a release. The term one-line in the description should be read as a claim about how the theme is delivered, not as a promise that the codebase is one line. The customisation documentation page exists separately for that. ## Documentation lives on GitHub Pages, in four pages Everything a user needs is four links in the README: Installation, Customisation, Integrations and Keyboard Shortcuts, each a page on cascadefox.github.io. That structure tells you what the project considers its surface area. Installation is the entry point. Customisation is the page that matters most for longevity, because a user who understands how to edit the theme can adapt it when Firefox changes an internal selector. Integrations suggests the theme coordinates with other software rather than being purely decorative. Keyboard Shortcuts aligns with the project's own positioning as keyboard centred. The README describes the aim in one line: removing a lot of the subjective clutter default Firefox comes with. Combined with the subtitle, a minimalistic and keyboard centred userChrome, that describes an interface that hides chrome and expects you to drive it from the keyboard. The keyboard shortcuts page is therefore not an extra feature but part of the core design, and a user who ignores it is using the theme wrong. The absence of that documentation in the repository is the practical issue for anyone auditing the project. From the repository alone you cannot tell which selectors the theme overrides or which Firefox versions it targets. ## Inspired by SimpleFox, which is the lineage to compare against The README credits SimpleFox by Miguel Ávila as the inspiration for Cascade's stylistic choices, and links that project directly. That is a useful comparison for anyone choosing between them. A theme that is inspired by another is not a fork of it, and the practical difference between two themes with a shared lineage is usually in the details each author chose to keep or cut. Cascade's stated direction is minimalism and keyboard use, so the comparison worth making is whether you want an interface that shows less and responds more to the keyboard. Two other elements are worth noting in the README's presentation rather than its content. There is a Discord badge labelled as an FFCSS Discord, which suggests the community around Firefox CSS customisation is shared across several projects rather than being specific to Cascade. And the issue tracker is linked as a gitbook styled badge, indicating the issues are expected to be documentation questions as much as bug reports. Licensing is MIT with the file at the root, which matters for a theme: you can fork it, adapt it to your own workflow and publish the result, provided you retain the required copyright and licence notices. ## What a new maintainer inherits The handover invitation is concrete enough to describe the work. Someone taking this over inherits a stylesheet that was broken repeatedly by Firefox updates, according to the maintainer's own account, and a repository with contributors and issues attached to it. The contributing file and the code of conduct are both present, which means the project has the governance scaffolding a handover needs even though it lacks an owner. That is the piece that makes the move to an organisation plausible rather than aspirational: the rules exist, only the people do not. For a user rather than a maintainer, the practical read is shorter. The theme still works on whatever Firefox version the maintainer's last edits supported, which is bounded by the 2026-05-23 push. Adopting it means accepting that you will fix your own breakage when Firefox changes internal markup, and that the customisation page is your only reference when it does. The repository topic tags reflect the same narrowness: firefox, firefox-css, firefox-theme, firefox-tweaks, userchrome, userchrome-styles and userchromecss. There is no cross-browser support in the description, and nothing in the repository suggests any. ## Conclusion Cascade suits someone who wants a quiet, keyboard driven Firefox and is comfortable editing CSS and reapplying it after browser updates, and it is a poor fit as the basis for a theme you intend to keep current, because the repository's last push was on 2026-05-23 against releases that stopped at v2.7.6 in 2022. Before adopting it, read the installation page on the project site and check whether the customisation options it documents still match the Firefox build you run. ## FAQ ### What is Cascade? Cascade is a minimalistic, keyboard centred userChrome theme for Firefox, distributed as CSS, whose aim is to remove much of the default interface clutter. The README describes it as a responsive one-line CSS theme. ### Is Cascade still being maintained? The README says the repository went stale and the maintainer is not finding time to fix bugs broken by Firefox updates. The maintainer is looking to move the project to an organisation so new maintainers can take over, and invites people to get in touch. ### How do I install the Cascade Firefox theme? The README links an installation page on the project site at cascadefox.github.io, along with separate pages for customisation, integrations and keyboard shortcuts. No download or build command is given in the repository itself. ### What is Cascade based on? The README says the theme is highly inspired by the stylistic choices of SimpleFox by Miguel Ávila, which it links as a separate project. ### What license is the Cascade theme released under? MIT, with the licence file in the repository root, so a fork or adapted version can be redistributed with attribution. ## Sources - [cascadefox/cascade on GitHub](https://github.com/cascadefox/cascade) - [License: MIT](https://github.com/cascadefox/cascade/blob/main/LICENSE) - [Project website](https://cascadefox.github.io) - [README](https://github.com/cascadefox/cascade/blob/main/README.md) - [Releases](https://github.com/cascadefox/cascade/releases) --- Hysen Labs editorial analysis, written from the project's own repository and release notes. Cite the canonical page: https://hysenlabs.com/projects/cascadefox-cascade