Variable fonts openly support responsive web design in making websites as fluid as possible. They not only reduce the size of files, but also the number of HTTP requests made to a website.
Tutorials about Web Design includes articles on designing tools, fonts, google fonts, CSP evaluator, photoshop etc.
Google has been on the forefront of fighting XSS issues, as proven by their Vulnerability Reward program, and has revealed two new tools to mitigate the problem. These two solutions are, namely, CSP Evaluator and CSP Mitigator.