I deleted my reddit account a few days ago and added reddit.com to hosts, but I've found its effectiveness very sporadic. Firefox and Opera can't connect, but

I deleted my reddit account a few days ago and added reddit.com to hosts, but I've found its effectiveness very sporadic. Firefox and Opera can't connect, but Chrome and Safari can. I'm confused as to why "127.0.0.1 reddit.com" works for some browsers but not for others.