Home Page Showing Wrong on IE8

When I view my home page, it shows the same way on all different browsers… except Internet Explorer 8 – but just on certain computers (which is the part that confuses me!). I live somewhere with a computer lab – so I’m able to check my website on numerous computers and browsers. It shows up the same everywhere (including some computers with IE 8), except for ONE computer which has the home page alignment wrong. On that computer, this is what the home page looks like:

https://www.prayersandapples.com/wp-content/uploads/2013/01/Bad-Screenshot.jpg

(The logo – which has a square white background – merges into the colored circles in the background because everything isn’t centered correctly.)

This is especially confusing, because if you click on any one article (and are re-routed to the screen showing just that article) everything re-aligns and looks perfect!

https://www.prayersandapples.com/wp-content/uploads/2013/01/Good-Screenshot.jpg

Another problem is that on the home page on ALL computers using IE8, the ‘share buttons’ (located at the bottom of each post) do not show?! And yet, if you click on any one article and go to that page, the share buttons show just fine.

And everything shows perfect and works as it should on Safari, Firefox and Google Chrome.

Any idea why any of this is happening?

My site is: https://www.prayersandapples.com