Filter property doesn't form containing block (Chrome BUG)
Removing yellow background on autocompleted inputs (in Chrome/Webkit)
Thin Navigation Arrow [concept] (CSS only)
Transition (shorthand-property)
Toggle transform/opacity via transition
Create HTML string using Array.prototype.join
Overflow: hidden; doesn't clip anchors (they still clickable)
Multiple articles that drop shadow to one another
Animated play / pause button
Flights table like characters
Get Pens from CodePen API (using Handlebars & async/await)
Subclassing in JS (Prior to ES6 Class)
getIn function implementation using Array.reduce
Lazy Image Loading (Using Intersection Observer API [including polyfill])
Tagify Input (JS plugin [converts input text into tags])
Modal Dialog [ARIA Accessible] (using CSS, JS)
Responsive Tabs (using CSS, JS)
Animated Prepopulation (concept) on Input Element
Responsive Images (Using Srcset & Sizes)
Floating Label (Using :placeholder-shown pseudo class)
substitute colors for red (like: crimson, firebrick, etc...)
The Fab Four Techinc (with max-width only)
Android Robot (CSS Image)
Mountain Landscape (#cssimage, css image)
Pinpoint (using rotate and border-botom-right-radius
Image Grid (using CSS custom variables)
Using Custom Variables (from within JS)
A Lightbox Image Gallery Equivalent in CSS3
Circular loader (using linear-gradient, pseudo-element and span)
Click on <a> link that doesn't jump to the top of the page
using input type="url" and autocomplete="url"
WebAnimations API (JS - element.animate())
Search form revealed on :hover
Horizontal Tab Navigation
-A Simple Image Gallery Enhanced with CSS3 (using :target pseudo-class)
Translate element with the text flow will give the scrollbar