Site doesn’t work in Internet Explorer – Page Wrap and Sidebar Problem

Looks like everyone’s got some variation of a problem with IE. Here’s mine.

1) My sidebar disappears to the bottom of the page, and the formatting of the sidebar is all messed up (indented too far, etc.)

2) Every other page on my site does not wrap properly within my 750px div wrap. Everything wraps fine on the home page, but as soon as you click on other navigation links you end up with no wrap.

Of course, everything works like a charm in Safari / FF.

Also, I have validated and looks like only 6 errors, most look very trivial, so I don’t think that’s it. I’ve also tried to create an alternate iestyle.css file – but I can’t find any good tutorials online about how to properly execute this strategy. I tried, but nothing happened.

Here is my site:
https://www.inpencilmusic.com

and style sheet

https://www.inpencilmusic.com/wp-content/themes/inpencil/style.css

Any help would be greatly appreciated!!