Pages about CSS
Using a combination of sepia(), hue-rotate() and possibly other CSS filters, it's possible to make any photo appear monochromatic, with the hue of your choice. I made a CodePen "pen" to demonstrate.
Using Source Maps with CSS
FizzBuzz in CSS
Creating a FizzBuzz solution using only CSS is probably impossible, but with just a little HTML added, it's perfectly doable, using a combination of CSS counters and the nth-child() pseudo-class selector.
"Hello, World!" in CSS
A "Hello, World!" program in CSS can be written by setting the "Hello, World!" text as the content of the ::before pseudo-element of the html element.
What is Device Pixel Ratio?
The device pixel ratio is the ratio between physical pixels and logical pixels on a high-resolution screen. Different devices report different values, including non-integer ones. You should use media queries to handle varying screen densities correctly.