If you are using SASS/SCSS as a precompiler for CSS, here is a really useful cheatsheet to help remember all the wonderful functions.

https://sass-cheatsheet.brunoscopelliti.com/ Read more about SASS Cheatsheet

Came across this great cheat sheet listing many of the special HTML characters (or glyphs) we, as web developers, come across from time to time. In addition to listing the the HTML code, the chart also lists the numeric code; a description of the character; the HEX code; the ISO in CSS content (for use with pseudo-selectors like :before and :after); and the Octal (I'll be honest, I've never had to use this one before). All in all, a super-handy reference sheet to have around. Read more about Cheat Sheet for Special HTML Entities