You can try basic steps like these in case of issues with web pages: Reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files. * Hold down the Shift key and left-click the Reload button * Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux) * Press "Command + Shift + R" (Mac) Clear the cache and the cookies from websites that cause problems. "Clear the Cache": Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now" "Remove Cookies" from sites causing problems: Firefox/Tools > Options > Privacy > Cookies: "Show Cookies" Start Firefox in Safe Mode to check if one of the extensions (Firefox/Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Firefox/Tools > Add-ons > Appearance). [[Troubleshoot Firefox issues using Safe Mode]] Do NOT click the Reset button on the Safe Mode start window or otherwise make changes. https://support.mozilla.org/kb/Safe+Mode https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Can you attach a screenshot? *http://en.wikipedia.org/wiki/Screenshot *https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem Use a compressed image type like PNG or JPG to save the screenshot.