With all of the changes and rapid advancements CSS has gone through over the last few years, we should not be surprised at the vast volume of open-source resources and tools that are continually being released.
These time-saving CSS libraries, frameworks, and tools have been built to make our lives that little bit easier and also offer a learning window into those CSS areas we may not fully understand.
In this collection you will find 50 of our favorite CSS libraries, frameworks, resources and tools that have all been released this year (2018). No doubt, you’ll find something interesting!
The Web Designer Toolbox
Unlimited Downloads: 500,000+ Web Templates, Themes, Plugins & Design Assets
CSS Layout Frameworks
Atomic Bulldog Grid – A CSS Grid layout, with partial fallback to Flexbox.
Flat Remix CSS Library – A set of predesigned elements that make for faster development.
FICTOAN – An intuitive SCSS framework that also moonlights as a UI kit.
Mustard UI – Billed as a CSS framework that “actually looks good”.
Material – This framework combines Bootstrap 4 with Google’s Material Design.
Smart CSS Grid – A minimal and responsive CSS Grid system.
Biomatic UI – A flexible atomic-focused CSS framework.
Tailwind CSS – A utility-first CSS framework for rapid UI development.
PaperCSS – The less formal CSS framework.
For more CSS layout frameworks, take a look at this collection.
CSS Flexbox Frameworks
Frow CSS – An open source HTML & CSS framework using Flexbox.
Katana.scss – A CSS Flexbox-based layout system.
Flexible Grid – A framework that will help you implement CSS Flexbox.
For more flexbox resources, take a look at this article.
WickedCSS animations – A library of pure CSS animations.
Epic Spinners – A collection of CSS-only spinning icons with VueJS integration.
Boilerform – An HTML and CSS boilerplate to take the pain away from working with forms.
Micron.js – A micro-interaction library built on CSS and JS.
Pure HTML5 and CSS3 SVG Loaders – An attractive collection of loading images you can download for free.
Handy CSS Ultilities
basicScroll – A tool that allows you to change CSS variables depending on the scroll position.
Unused CSS – A tool that scans your website for any unused CSS selectors.
Purgecss – A tool that removes unused CSS from your site.
CSS Gridish – Build a Sketch file and CSS Grid code from your project’s specs.
OptiCSS – A template-aware CSS optimizer.
Mort – A tool for detecting “dead” CSS.
Web-Based CSS Tools & Generators
FlexBox Parent Attribute Visualizer – An interactive way to see the effect of various CSS Flexbox settings.
Keyframes.app – A web app and Chrome extension for creating CSS animations.
Visually Build Responsive Layouts with CSS Grid – A tool to help you build a responsive CSS grid.
CSS Alignment Cheatsheet – A nicely-illustrated guide to aligning all the things.
Clippy – An online tool you can use to create a CSS
GradPad – An online to for creating CSS color gradients.
Trianglify.io – Generate custom low poly patterns in PNG or SVG format.
cssgr.id – An interactive CSS Grid generator.
Layoutit! – An interactive CSS Grid building tool.
Gradientify – A collection of top gradients with copy and paste CSS code.
Check out this article for a huge collection of free web-based CSS tools and generators.
CSS Image Effects
Instagram.css – A complete set of Instagram filters in pure CSS.
Pure CSS Halftone Effect – How to create a mesmerizing effect with CSS.
CSS Glitch Effect – Mary Lou shares an experimental glitch effect powered by CSS animations and the clip-path property.
Direction Aware Hover Effects – Nifty CSS/JS hover effects based on the direction a user is coming from.
For more CSS-based image effects, take a look at this library collection.
CSS Learning Resources
Learn CSS Grid for free – A set of 14 interactive screencasts to take you from beginner to advanced.
CSS Cheat Sheet – A well put together reference of CSS properties.
Front-End Design Checklist – An exhaustive list of elements to help you ensure quality in design.
Grid to Flex – CSS Flexbox fallbacks for projects using CSS Grid.
Component Based Design System With Tachyons – Introduction to a functional CSS framework / design system.
30 Seconds of CSS – A curated collection of useful CSS snippets you can understand in 30 seconds or less.
How CSS works: Understanding the cascade – Learn one of the true fundamentals of CSS for more efficient code.
Manageable Utility Systems with CSS Variables – A look at the difference between Sass variables and new CSS variables.
Cool CSS Creations
Piano Keyboard – Thanks to this CSS/JS site, you can play piano on your keyboard or mouse.
Pure CSS Francine – A HTML/CSS rendering of an 18th-century oil painting.
Air Bomb – A fun game written with pure CSS (no JS required).
More CSS Resources
And if you’re looking for even more CSS frameworks, tools, snippets or templates, you should browse our extensive and continually updated CSS archives.