IE 8 or 9 not displaying Css Correctly

I cant seem to get my css to work correctly in IE 8 or 9 specifically background images In my header behind the nav and in the body behind the welcome/testimonial statement

Url is https://storage.conceptenvy.com/

There is another site that is using the same template that I am and there able to get there css backgrounds to work ok but looking at there source I cannot seem to figure out how. https://www.jimspivey.net/

If anyone can Help I would deeply appreciate it