I appreciate your helpful comments on my glitches. I installed the latest version (62.0) of Firefox 64bit and connected to HBR.org http://www.hbr.org/ I cannot adjust the text size in any HBR.org's articles and banners keep loading. No add-ons are installed. Even though I turn on and off the private browsing mode, the glitch still exists. When I visited the website on Chrome, there was no problem at all. I have uploaded the capture video on my cloud drive and YouTube. I captured a video showing hbr.org on Firefox and Chrome. You can find my problem explained above. https://drive.google.com/file/d/10ON1wfneH51SHsndFX8s5fkPf5cMFrWA/view?usp=sharing https://www.youtube.com/watch?v=E7_jlpRBqws Can you please help me fix this problem? Thank you for your help.