# Visit the blog alvarotrigo.com/blog/animated-backgrounds-css/ # Scroll down the page until you find the title "Snowfall Effect Animated Background (CSS only)" The window will flicker and Firefox becomes unresponsive until it just exits and with no Mozilla Crash Reporter window appearance. * The crash happens upon a new default Firefox 97.0.1 profile on Windows 11. * It do not occure in Firefox 98.0b9. * The CSS Snowfall Effect is likely unrelated, visiting its CodePen directly do not trigger the crash: codepen.io/alvarotrigo/pen/YzxJpoE