hello, try updating your graphics driver, or in case there is no new version available at the moment disable hardware acceleration in firefox > options > advanced > general.

Hi there, I tried what u said but still i m not able to resolve the problem. This problem is appearing not in every website but few of them like: www.saavn.com, www.exforsys.com...... And this problem is appearing on all browsers. Attached is the image for your reference. If any one of u hv the answer, plz reply soon.

hello, when this is happening across all browsers then it's likely an issue with a corrupted font on your pc. the site you've shown as example uses arial...

from an internet search it appears that others could resolve similar issues by pressing windows-key +r & opening: C:\Windows\Fonts\Arial.ttf afterwards click (re)install in the font window...