MajorGeeks Site Resolution

Has anyone else experienced the MajorGeeks site suddenly changing resolution lately? It first happened to me last week. Suddenly the text size and the size of everything got way smaller. There’s more stuff there obviously, but in way smaller size.

At the time, I was 90% sure it had to have been the result of my sister’s mischievous kid having pressed something on the keyboard while I was out of the house for 15 or 20 minutes. The only way I found to get the resolution back to normal was to clear out the private data on my Opera browser. However, now yesterday, with my sister’s mischievous kid nowhere around here, the MajorGeeks site again suddenly switched to that small resolution. The MajorGeeks site is the only site doing this.

Anyone have any idea what’s causing it or how to reverse it without having to clear out my Opera browser’s private data?