theming

5 tutorials

Step-by-step programming tutorials on PHP, JavaScript, Laravel, WordPress and more.

All JavaScript 55 Tips & Tricks 50 Hidden Features 42 CSS 40 PHP 37 UX 36 Performance 22 Debugging 19 Browser APIs 18 DOM 14 AJAX 12 Forms 11 Security 10 jQuery 8 Animations 7 HTML 2

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PHP Intermediate

Dark Mode End to End: OS Preference, Toggle, and No Flash of White

Respect the system setting, let users override it, remember the choice, and never flash the wrong theme on load - the complete wiring across CSS, JS and PHP.

Jun 6, 2026 3 min 119

CSS Intermediate

light-dark(): Two-Mode Colors in One Declaration

Half your dark-mode CSS is pairs of rules flipping the same property. light-dark() collapses each pair into one line - and color-scheme unlocks free dark UI from the browser itself.

Nov 29, 2025 2 min 1,149

CSS Intermediate

color-mix(): Hover States Without a Second Color Definition

Darker-on-hover, tinted backgrounds, borders derived from the brand color - color-mix computes them in the browser from one source color, and your theme stops needing a palette generator.

Sep 10, 2025 2 min 632

CSS Advanced

Custom Property Patterns: Fallback Chains and the Invalid-Value Trap

CSS variables can chain fallbacks, expose component APIs and scope themes - and they fail in a uniquely confusing way that every serious user needs to understand once.

Sep 5, 2025 2 min 1,575

CSS Beginner

Theme Every Checkbox and Radio with One CSS Line

Custom checkbox hacks - hidden inputs, pseudo-element ticks, sprite images - solved a problem that accent-color now handles in a single declaration.

Jun 5, 2024 2 min 3,802

Carlo Fontanos

Dark Mode End to End: OS Preference, Toggle, and No Flash of White

light-dark(): Two-Mode Colors in One Declaration

color-mix(): Hover States Without a Second Color Definition

Custom Property Patterns: Fallback Chains and the Invalid-Value Trap

Theme Every Checkbox and Radio with One CSS Line