107 CSS Forms
Forget standard, boring forms - this collection shows you how to gain full control over their design. At its core are CSS Grid and Flexbox for creating adaptive layouts, while the appearance: none property allows you to style even complex elements like select from scratch. The demos also make heavy use of CSS Custom Properties, which makes theming and branding your forms incredibly simple. These examples are your guide to building unique and fully responsive forms that match your design system.
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Animated Sign-In Form with Theme Switcher
An interactive login form that performs a 360-degree 3D flip animation to seamlessly transition between vibrant, gradient-based color themes triggered by a JavaScript state manager.
Checkout Radios
A modern checkout form component utilizing the powerful CSS :has() selector to style parent containers based on the state of nested radio inputs.
Sign Up and Sign In Toggle Form
A dual-panel form where JS acts as a simple state trigger, using classList.toggle to apply .animate classes. The entire complex transition is driven by CSS @keyframes, which choreograph separate transform and z-index animations for content and a background image.
Form Validation with :has()
Leverage the native HTML validation attributes like minlength in conjunction with the :has() selector to deliver real-time, high-performance visual feedback on form errors directly on the container, achieving robust and modern pure CSS validation.
Neo-Brutalism Login Page using CSS
A pure CSS demo showcasing a striking neubrutalist/retro UI style, achieved using prominent box-shadow for the paper-cut 3D effect and CSS variables to manage a bold, three-color palette.
Simple Subscribe Form
This demo’s lively backdrop is created by injecting animated creatures into the form’s ::before and ::after pseudo-elements using Base64 data:image URLs. This visual flair is complemented by polished, pure CSS micro-interactions - the email input elegantly expands its width on :focus, while the submit button provides a tactile 3D press effect by manipulating box-shadow and transform: translateY().
UI Credit Card Checkout
This payment UI is a showcase of clean SCSS architecture, utilizing variables and a custom @mixin for maintainability. A key feature is its clever, JS-free state management for card selection, where input[type="button"] elements are toggled using the :focus pseudo-class to remove a grayscale() filter. The component’s cohesive design is further enhanced by custom-styled native <select> elements, achieved by stripping default browser styles with appearance: none;.
Credit Card Checkout
This payment UI demonstrates a classic front-end architecture, using CSS Flexbox to create a responsive two-column layout that gracefully stacks on smaller screens. All interactive functionality, including the custom card selection dropdown, is orchestrated by a concise vanilla JavaScript module that toggles a simple .visible class for state changes.
Credit Card Checkout
This JS-free form component achieves a distinct “neo-brutalist” aesthetic by pairing a solid border with a hard, offset box-shadow, creating a tactile, pseudo-3D effect. This visual system is applied to a modern Flexbox layout and is enhanced by polished micro-interactions, including a unique box-shadow outline on :hover and a clear background change on :focus for a cohesive user experience.
Border Form
This demo blends a modern, adaptive layout powered by CSS Grid with a striking visual style. The fluid grid structure is populated by chunky form elements, whose pseudo-3D depth is crafted by pairing a thick border with a solid-color box-shadow, demonstrating a complete UI solution in pure CSS.
Colorful Contact Form
This is a lightweight, JS-free contact form that relies on modern CSS for layout and HTML5 for native validation. The code is written in Pug and SCSS, demonstrating a clean, preprocessor-based workflow for building robust and maintainable UI components.
Contact Form with SVG Animation
This is a complete UI component blending aesthetic animation with functional form design. Staggered CSS keyframe animations bring the inline SVG to life, while the form itself features modern styling techniques, including a performant gradient-transition button and absolutely positioned Feather icons.
Cube Login Form
This demo showcases a pseudo-3D cube effect for form elements, architected in pure CSS using nested divs and transform: skew() to create a lightweight isometric perspective. The key micro-interaction is a satisfying “wipe” animation - triggered on :focus via the general sibling combinator - which transitions the top property of an inner element to reveal a vibrant gradient fill.
