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CSS

Cascading Style Sheets (CSS) is a simple language for adding style (e.g., fonts, colors, spacing) to HTML documents. It describes how HTML elements should be displayed.

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Print CSS and Firefox: @media print, Page Breaks, Headers, and DevTools Print Simulation

Print CSS and Firefox: @media print, Page Breaks, Headers, and DevTools Print Simulation

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4 min read
Dark Mode in Firefox: NightOwl vs Dark Reader, OS Integration, about:config, and Scheduling

Dark Mode in Firefox: NightOwl vs Dark Reader, OS Integration, about:config, and Scheduling

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4 min read
Firefox CSS Grid and Flexbox Debugger: The Best Layout Inspector in Any Browser

Firefox CSS Grid and Flexbox Debugger: The Best Layout Inspector in Any Browser

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4 min read
Firefox DOM Inspector: CSS Rules, Grid/Flexbox, Accessibility, Fonts, and Event Listeners

Firefox DOM Inspector: CSS Rules, Grid/Flexbox, Accessibility, Fonts, and Event Listeners

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4 min read
Firefox Responsive Design Mode: DPR, Touch Simulation, Network Throttling, and Device Presets

Firefox Responsive Design Mode: DPR, Touch Simulation, Network Throttling, and Device Presets

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4 min read
Firefox Font Rendering: How It Works, HiDPI Settings, and Linux Configuration

Firefox Font Rendering: How It Works, HiDPI Settings, and Linux Configuration

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4 min read
Dark Mode in Firefox: OS Settings, Force Dark, NightOwl vs Dark Reader, and Per-Site Control

Dark Mode in Firefox: OS Settings, Force Dark, NightOwl vs Dark Reader, and Per-Site Control

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4 min read
userChrome.css: Customizing Firefox's UI with CSS (Compact Mode, Hide Tabs, and More)

userChrome.css: Customizing Firefox's UI with CSS (Compact Mode, Hide Tabs, and More)

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3 min read
Developer Dark Mode: Firefox DevTools, GitHub, MDN, and NightOwl Extension

Developer Dark Mode: Firefox DevTools, GitHub, MDN, and NightOwl Extension

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3 min read
Six exercise types, two layouts, and a phone that gets three tabs instead of three panes

Six exercise types, two layouts, and a phone that gets three tabs instead of three panes

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4 min read
Customizing Firefox's New Tab Page: From Simple to Full Control

Customizing Firefox's New Tab Page: From Simple to Full Control

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3 min read
Firefox Dark Mode: Comparing Dark Reader, NightOwl, and Built-In Options

Firefox Dark Mode: Comparing Dark Reader, NightOwl, and Built-In Options

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3 min read
Firefox Developer Edition vs Regular Firefox: What's Actually Different

Firefox Developer Edition vs Regular Firefox: What's Actually Different

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3 min read
Browser Setup for Night Work: Reducing Eye Strain in Firefox

Browser Setup for Night Work: Reducing Eye Strain in Firefox

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3 min read
Width is not the viewport, and 800x600 is not a desktop

Width is not the viewport, and 800x600 is not a desktop

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4 min read
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