Hi leejosepho, this not a purchased theme.i made this theme for a client. and i don’t know why this issue only ie?. can you please check it once. this is not for theme support. i just need to solve the css issue.
I am not a coder, but I do know my own Twenty Twelve Child Theme in older versions of IE had the same kind of problem you are experiencing until I made a separate style sheet without using media queries.