Updated May 3, 2026
Modal popups are essential UI components for alerts, login forms, image galleries, and confirmation dialogs. This collection shows multiple ways to build them with pure CSS — no JavaScript framework required.
Techniques include: the :target pseudo-class method (URL hash-based), checkbox hack (no URL change), and JavaScript-enhanced modals with smooth animations. Each example includes a semi-transparent overlay backdrop and centered modal content.
Accessibility note: For production use, consider adding keyboard trap support (Escape to close) and ARIA attributes. Several demos show how to integrate these enhancements with minimal JavaScript.
Clean CSS modal with semi-transparent overlay backdrop. Uses the :target pseudo-class to show/hide the modal when the hash in the URL matches the modal ID.
Technologies
Code By
Nodws
Created
2023-10-05
Pure CSS popup modal using the :target selector — no JavaScript at all. Multiple modal examples with different sizes and close button styles shown in one demo.
Technologies
Code By
Sahil
Created
2024-06-15
Checkbox hack modal: uses a hidden checkbox input and associated label to toggle modal visibility. No URL hash changes means browser back button stays clean.
Technologies
Code By
Senky
Created
2023-08-20
Simple CSS-only modal window with title bar, close button, and overlay. Focuses on the core CSS structure for creating accessible modal dialogs.
Technologies
Code By
Mlegakis
Created
2024-04-10
Modern CSS modal with overlay including smooth fade-in animations, transition effects, and responsive sizing for mobile and desktop viewports.
Technologies
Code By
Palash Basak
Created
2025-07-25
