sin(), cos(), atan2() landed in CSS in 2023. You can now place elements in circles, arcs, and spirals with pure CSS, no JavaScript, no libraries. Here's how the math works.
Unit Circle Trigonometry - haitham
An interactive sketch for visualizing sine and cosine functions with the unit circle
The CSS Selection - 2026 Edition - Project Wallace
The CSS Selection shows real-world CSS usage from over 100,000 websites and looks at the most important metrics.
7 CSS Tricks That Actually Have Good Browser Support
The n-Category Café
Note:These pages make extensive use of the latest XHTML and CSS Standards. They ought to look great in any standards-compliant modern browser. Unfortunately, they will probably look horrible in older browsers, like Netscape 4.x and IE 4.x. Moreover, many posts use MathML, which is, currently only supported in Mozilla. My best suggestion (and you will thank me when surfing an ever-increasing number of sites on the web which have been crafted to use the new standards) is to upgrade to the latest version of your browser. If that's not possible, consider moving to the Standards-compliant and open-source Mozilla browser.
#10: "Bad at CSS" by Keith Cirkel
@function — Native Custom Functions in CSS
CSS now has user-defined functions. No preprocessor, no JavaScript, but native @function with typed parameters, local variables, and conditional logic built right into your CSS.
Pure CSS halftone patterns: dots, lines, circles
A project overdue. As an 80's/90's kid, I was obsessed with printing technology - and especially halftone patterns. I've long theorized that these pat
About - Project Euler
A website dedicated to the fascinating world of mathematics and programming
Stripped Down Browsers
I started learning programming in High School by using a toy language with graphics.
CSS3 Patterns Gallery
The patterns themselves should work on Firefox 3.6+, Chrome, Safari 5.1, Opera 11.10+ and IE10+. However, implementation limitations might cause some of them to not be displayed correctly even on those browsers (for example at the time of writing, Gecko is quite buggy with radial gradients).