Generate colors palette
Easy to use and smart idea for build a color palette
and many more again from CSS-trick.com
Creative form input field design
Cool styles and effects for button
Good example for many button styles.
CSS library for image filters like Instagram.
A tiny (<1kb gzipped!) library for recreating Instagram filters with CSS filters and blend modes.
Drupal 8 Base
Drupal 8 Base is a fresh and clean repo to begin with a new installation of Drupal 8 but with the Configuration Management based on the File and not the Database storage. It provide also a Robo build script to create a new Drupal 8 installation.
AMP and Drupal
Accelerated Mobile Pages AMP make web pages super fast on mobile
Custom use of Google Analytics
Learning to Use Google Analytics More Effectively at CodePen
New way to create responsive emails without media queries
The solution involves the CSS calc() function and the three width, min-width and max-width properties.