Balloon.css – Simple tooltips made of pure CSS.
10 Free Open Source Date Picker Plugins – A collection including vanilla JS plugins, jQuery plugins, and even extensions for frameworks like Bootstrap.
Sketchplugin Webview Template – A template for building Sketch plugins using a HTML page as user interface.
Freebie: Funkies Icon Set (100 Icons, SVG & PNG) – This free icon set comes in five different styles: flat, full color, gradient, shaded and subtle color.
Responsive HTML Table Techniques & Examples – A variety of ways to make your HTML tables mobile-friendly.
5 Node.js Alternatives To WordPress – A collection of high-performance CMS that run on Node.js.
Free High-Resolution iPhone X Mockup Set for Photoshop – The set includes four iPhone X views, all in beautiful high-resolution.
Liquid Distortion Effects By Yannis Yannakopoulos
CSS Grid Challenge: Winners and Templates By Cosima Mielke
How to Combine Flexbox and CSS grids for Efficient Layouts By Abbey Fitzgerald
Tabbed Interfaces By Heydon Pickering
Fundamentals of Responsive Images By Marc Drummond
8-Point Grid: Vertical Rhythm By Elliot Dahl
UI Design for iPhone X: Top Elements and the Notch By Max Rudberg
Adobe XD: The Definitive Guide By XDGuru
Gestalt Theory for UX Design: Principle of Proximity By Marina Yalanska
10 Free Geometric Pattern Swatches in AI, PAT & PNG Format By Spoon Graphics
Adjusting Design For iPhone X By Moses Kim
HTML+CSS Star Wars Characters – Ryan Spilhaus draws some favorite characters with nothing but HTML and CSS.