A collection of CSS3 powered hover effects to be applied to links, buttons, logos, SVG, featured images and so on. Easily apply to your own elements, modify or just use for inspiration. Available in CSS, Sass, and LESS
Source: Hover.css – A collection of CSS3 powered hover effects
Just add a class for a plethora of super simple CSS animations.
At the time of writing, very few, if any, of these selectors are available in browser. However, it’s good to know which selectors have been chosen for future versions of CSS.
CSS4 introduces many new selectors and features. Learn how to use each one, with easy to understand explanations and examples.
A page with a collection of built in classes for Gravity Forms. Many of these are very useful such as placing form fields side by side without needing to write the code manually for each Gravity Form.
Source: CSS Ready Classes for Gravity Forms
The always insightful Justin Tadlock has posted a great post on how best to handle stylesheets in child themes. Though there are many options for this, including the infamous @import technique, Justin recommends loading the styles directly from the parent theme itself. It’s a simple but effective solution that should work for 99% of cases.
Loading Parent Styles for Child WordPress Themes.
Fantastic library to parse CSS and add vendor prefixes to CSS rules. Supports Grunt, Gulp, and many other libraries/tools.
AutoPrefixer on GitHub.
An intro to using AutoPrefixer by CSS-Tricks.