Cannot Click On Links Or Select Text On Posts

Hello,
About a week ago people started complaining that they could not click on ANY of the links on the POSTS on my blog: https://uphillsnowballs.com/

If you go to the homepage, you can click on anything you want. However, within each post, you cannot click on any of the links, like the sharing links, youTube videos, the polls, etc. It’s almost as though there is a lock on the site preventing you from doing anything. You also cannot select text.

I’ve noticed it doesn’t work on Chrome or FireFox. It works for me on IE7, however some people with IE says it does not work for them (not sure which versions they are using).

I’ve had plugin updates since then, but I’m not sure at what point it started happening. I’ll now take better notes… as in… I updated THIS plugin and it changed THIS.

However, in the meantime, I have no idea what I did to cause this change. Also, I’m not really too well versed in CSS. If you can please post specific directions (Go to THIS editor (and where to find that editor), click under THIS, look for THIS and change THIS wording) I would really appreciate it. I’ve been slowly teaching myself how to do the specific edits, like I taught myself HTML… so I have SOME understanding. I’d appreciate all the help I can get though! THANK YOU IN ADVANCE!!!