CSS Editor
Editors are where CSS productivity happens. VS Code with a few extensions gives you autocomplete, colour previews, and live reload.
CSS editor setup
EXAMPLE
# 1. VS Code extensions
# - CSS IntelliSense for class names from your project
# - Tailwind CSS IntelliSense (if using Tailwind)
# - PostCSS Language Support
# - Stylelint
# - Color Highlight - inline preview of colour values
# - HTML CSS Support
# - Path Intellisense
# - Live Server (or Vite's HMR for real projects)
# 2. Settings (.vscode/settings.json)
{
'editor.formatOnSave': true,
'editor.codeActionsOnSave': {
'source.fixAll.stylelint': 'explicit'
},
'css.lint.unknownAtRules': 'ignore',
'editor.quickSuggestions': {
'strings': true
},
'tailwindCSS.includeLanguages': {
'html': 'html',
'javascript': 'javascript',
'typescript': 'typescript'
}
}
# 3. Stylelint - linter for CSS
# npm i -D stylelint stylelint-config-standard
# .stylelintrc.json
{
'extends': ['stylelint-config-standard'],
'rules': {
'selector-class-pattern': '^[a-z][a-zA-Z0-9-]+$',
'declaration-block-no-duplicate-properties': true,
'no-descending-specificity': null
}
}
# 4. Prettier for formatting
# npm i -D prettier
# .prettierrc
{
'singleQuote': true,
'trailingComma': 'all'
}
# 5. Live preview
# - VS Code 'Live Preview' built-in
# - Vite or Next dev server with HMR
# - Browser DevTools' Sources tab to edit CSS live and copy back
# 6. Browser DevTools
# - Inspect element + Edit Styles
# - Computed tab shows the final cascade winner
# - Layout tab visualises flexbox + grid
# - Coverage tab shows unused CSS
# 7. WebStorm alternative
# - Best-in-class CSS refactoring
# - Visual debugging of grid + flexbox
# 8. PostCSS plugins worth knowing
# - autoprefixer (vendor prefixes)
# - postcss-preset-env (future CSS today)
# - postcss-import (real imports)
# - tailwindcss (utility-first)
Why it matters
A good editor setup pays back its setup time the first day. Stylelint catches typos and bad selectors; Color Highlight + Tailwind IntelliSense remove the productivity tax of CSS. Browser DevTools is the second editor every web developer needs to master.
Tip: Tweak the snippet with Try it Yourself », then sit the quiz at the bottom of the page.
Example
Example
<!DOCTYPE html>
<html>
<head>
<style>
body { font-family: Verdana, sans-serif; }
.box { background: #04AA6D; color: #fff; padding: 20px; border-radius: 6px; }
</style>
</head>
<body>
<h1>CSS Editor</h1>
<div class="box">Edit the CSS on the left, then click Run »</div>
</body>
</html>
Try it Yourself »
Exercise
Type the keyboard shortcut that runs the code.
Press:
+ Enter
The standard modifier key.
Discussion
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