Responsive CSS Only Header Navigation – Luxbar
Luxbar is a CSS library used for creating a responsive, mobile-friendly header navigation that is fully customizable via CSS classes.
CSS & CSS3
Morphing Hamburger Menu With Pure CSS/CSS3
A pretty cool app/site navigation which has the ability to morph the hamburger button into a top navigation panel when clicked/taped.
Grid Overlays For Modern Web Layout Design – Graaf
Graaf is a collection of pure CSS grid overlays that display grid and measurement overlays for grid system design.
Responsive Justified Photo Grid Layout With Pure CSS – flexbin.css
flexbin.css is a lightweight CSS library which lets you create responsive, neat, justified grid layout for showcasing your photos using CSS flexbox.
CSS Only Pinterest-like Responsive Board Layout – Boardz.css
Boardz.css is a very lightweight CSS library which lets you generate a responsive, adaptive, Pinterest board-like grid layout from normal html lists.
Pure CSS Scroll Depth Indicator
A pure CSS solution to create a fixed header progress bar indicating how far you have scrolled. Powered by @supports CSS at-rule.
Circular Progress Bar With Plain HTML / CSS
A pure Html and CSS approach to presenting percentage values in partially filled circles just like the ring chart.
Insert Pretty Awesome Buttons Into Your Webpage Using Pure CSS – bttn.css
bttn.css is a cross-browser CSS library that helps you create various types of actions types with variable sizes and colors on the web applications.
CSS Only Responsive Horizontal Slider
A responsive, fullscreen, horizontal slider which allows the user to switch between page slides using CSS3 transitions and transforms.
Flexbox Based Vertical Accordion With Pure CSS
A smooth, responsive, vertical accordion UI that expands the current accordion panel on mouse hover, built using pure CSS and flexbox model.