Hamburgers is a collection of tasty CSS-animated hamburger icons. Also included is the source as a Sass library. It’s modular and customizable, so cook up your own hamburger.

GitHub

„Element queries are a new way of thinking about responsive web design where the responsive conditions apply to elements on the page instead of the width or height of the browser.
Unlike CSS @media queries, @element Queries are aware of more than just the width and height of the browser, you can write responsive conditions for a number of different situations like how many characters of text or child elements an element contains.
Another concept that element queries brings to CSS is the idea of ‘scoping’ your styles to one element in the same way that JavaScript functions define a new scope for the variables they contain.“

Element Query Conditions

Width-based Conditions

• min-width min-width in px, min-width in %
• max-width max-width in px, max-width in %

Height-based Conditions

• min-height min-height in px, min-height in %
• max-height max-height in px, max-height in %

Count-based Conditions

• min-characters on block elements, on form inputs
• max-characters on block elements, on form inputs
• min-lines min-lines demo
• max-lines max-lines demo
• min-children min-children demo
• max-children max-children demo

Scroll-based Conditions

• min-scroll-y min-scroll-y demo
• max-scroll-y max-scroll-y demo
• min-scroll-x min-scroll-x demo
• max-scroll-x max-scroll-x demo

Aspect-based Conditions

• orientation orientation demo
• min-aspect-ratio min-aspect-ratio demo
• max-aspect-ratio max-aspect-ratio demo

Meta-Selectors

• $this $this demo
• $parent $parent demo
• $root $root demo
• $prev $prev demo
• $next $next demo

Element Queries

Inspect styles in a simple, well-organized & beautiful way with this Chrome extension. You can select any object to get more specific information about them. Also a nice way to browse color palettes of websites you visit.

CSSPeeper

Rocket.Chat is am impressive Open Source Web Chat Platform, with a huge amount of features:

• BYOS (bring your own server)
• Multiple Rooms
• Direct Messages
• Private Groups
• Public Channels
• Desktop Notifications
• Mentions
• Avatars
• Markdown
• Emojis
• Custom Emojis
• Reactions
• One touch Geolocation
• TeX Math Rendering – inline math typesetting
• Media Embeds
• Link Previews
• Sent Message Edit and Deletion
• Transcripts / History
• File Upload / Sharing
• Scalable file sharing – S3 uploads with CDN downloads
• Full text search
• Live chat / Messaging call center
• LDAP Authentication
• CAS 1.0, 2.0 support for education institutions and hosting providers worldwide
• Support for Okta SSO through SAML v2
• I18n – Supports 22 Languages
• Hubot Friendly
• (Beta) Face to Face Video Conferencing (aka WebRTC )
• (Beta) Multi-users Video Group Chat
• (Beta) Jitsi integration
• Audio calls
• Multi-users Audio Conference
• Screensharing
• ….. more

Rocket.Chat

Canvas based dial that adds mouse click,  wheel mouse, keyboard  and  finger / touch events.

Really nice :)

jQuery Knob