RSK World - CSS Grid Layout | Modern Grid, Flexbox & Responsive Layouts | RSK World

CSS Grid Flexbox Responsive Layout Modern CSS

CSS Grid Layout provides hero, features grid, gallery, holy grail layout, flexbox patterns, scroll snap, container queries, overlapping grid, sticky sidebar, animated grid, bento grid, :has() demo, tags. Layouts page: 12-column grid, masonry-style, card row, sidebar layout, centered content, zigzag layout. Advanced: subgrid, flex order/align-self, multi-column, fluid typography, aspect-ratio, minmax grid, focus-visible, CSS-only tabs, logical properties, glassmorphism. Dark/light theme, skip link, back-to-top. By rskworld.in.

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CSS Grid & Flexbox

Hero grid, features grid with auto-fit/minmax, gallery with auto-fill, holy grail layout with grid areas. Flexbox for header, footer, card rows, centered content, tags (flex wrap).

Hero – 3-column grid; features – repeat(auto-fit, minmax(260px, 1fr)); gallery – aspect-ratio 1:1
Holy grail – grid-template-areas: header, sidebar-left, main, sidebar-right, footer
Flexbox patterns – flex-row, flex-center, flex-space-between; footer-inner flex column
Responsive: holy grail stacks to 1 column; gallery 2 cols on small screens
Container: max-width 1200px, padding 1rem

Project Structure & Files

index.html (main demos), layouts.html (layout patterns), advanced.html (advanced demos). styles.css, layouts.css, advanced.css. script.js for menu, theme, back-to-top.

index.html – hero, features, gallery, holy grail, flexbox, scroll snap, container queries, overlapping grid, sticky sidebar, animated grid, bento, :has(), tags
layouts.html – 12-col grid, masonry, card row, sidebar layout, centered, zigzag
advanced.html – subgrid, flex order/align-self, multi-column, fluid typography, aspect-ratio, minmax, focus-visible, CSS-only tabs, logical properties, glassmorphism
styles.css – theme variables, dark mode, skip link, all main section styles
Font Awesome 6.4 from CDN

Accessibility & Theme

Skip-to-main link, :focus-visible styles, prefers-reduced-motion. Dark/light theme toggle with localStorage and prefers-color-scheme. Semantic HTML, ARIA where needed.

Skip link – position absolute, focus brings to top; outline for focus-visible
Theme – data-theme on html; CSS variables for light/dark; script.js toggles and persists
prefers-reduced-motion – animation-duration and transition-duration 0.01ms
Back to top – visible after scroll 400px; smooth scroll to top on click

Layout Patterns

12-column grid with span classes. Masonry-style dense grid. Card row (flex). Sidebar layout (grid). Centered content (flex). Zigzag alternating layout with direction rtl.

grid-12 – repeat(12, 1fr); col-12, col-6, col-4, col-3; responsive span 12 on small
Masonry – grid-auto-flow: dense; tall/wide items with grid-row/column span
Zigzag – grid 1fr 1fr; zigzag-reverse uses direction rtl, children ltr
Sidebar layout – 200px 1fr; stacks to 1fr on max-width 600px

CSS Variables & Responsive

Root variables for colors, shadows, radius, transition. Dark theme overrides. Breakpoints: 768px (nav, holy grail), 600px (sticky), 500px (bento, zigzag), 480px (gallery, features).

:root – color-primary, color-surface, color-text, shadow, radius, transition
[data-theme="dark"] – surface, text, muted, shadow overrides; dark body background
Media queries – .nav.open for mobile menu; .menu-toggle display flex on 768px
Container queries – container-type: inline-size; @container cards (max-width: 400px)

What You Get

Static HTML/CSS/JS project: index, layouts, advanced pages; styles, layouts.css, advanced.css; script.js; README, SETUP, CHANGELOG, CONTRIBUTING, LICENSE, docs.

Complete source – css-grid-layout/ folder with all HTML, CSS, JS
No build step – open index.html or use npx serve / python -m http.server
Documentation: README, SETUP, CHANGELOG, RELEASE_NOTES, CONTRIBUTING, LICENSE, docs/FEATURES.md
Modern browser: Grid, Flexbox, container queries, :has(), backdrop-filter
© 2026 Molla Samser (RSK World).

Layout Application

Pure front-end. Open index.html, layouts.html, or advanced.html in a browser. Theme and menu work via script.js; no server required.

css-grid-layout/ – index.html (main), layouts.html, advanced.html
index.html – hero, features, gallery, holy grail, flexbox, scroll snap, container queries, overlapping, sticky, animated grid, bento, :has(), tags
script.js – menu toggle (.nav.open), theme toggle (localStorage), back-to-top (scroll + smooth scroll)
Author: Molla Samser | rskworld.in

Advanced CSS Used

Scroll snap (scroll-snap-type, scroll-snap-align). Container queries (container-type, @container). :has() for parent styling. aspect-ratio, clamp(), minmax(), fit-content(). Logical properties, backdrop-filter.

Scroll snap – scroll-snap-type: x mandatory; scroll-snap-align: start on items
Container queries – container-name: cards; @container cards (min-width/max-width)
:has() – .has-card:has(.has-badge:hover) for border and shadow
Subgrid – grid-template-rows: subgrid with @supports fallback

Project Features

CSS Grid, Flexbox, responsive, holy grail, scroll snap, container queries, overlapping grid, sticky sidebar, animated grid, bento grid, :has(), tags, 12-col, masonry, zigzag, subgrid, tabs, glassmorphism.

Index – hero, features, gallery, holy grail, flexbox, scroll snap, container queries, overlapping, sticky, animated grid, bento, :has(), tags, back-to-top, theme
Layouts – 12-column grid, masonry, card row, sidebar, centered, zigzag
Advanced – subgrid, flex order/align-self, multi-column, fluid typography, aspect-ratio, minmax, focus-visible, CSS-only tabs, logical properties, glassmorphism
A11y – skip link, focus-visible, prefers-reduced-motion