Website Display Problem

Home page won’t display properly for me in Firefox. It will display properly in Chrome at normal zoom but once I reduce the size of viewing screen it is messed up. Same happens in the Contact us page and the image of the phone disappears altogether. Same is the case in IE (I’m using either 9 or 10. Not sure which). Home page is all over the place when view on mobile phone (using chrome, didn’t try other browsers on the phone). Same problem on my old laptop. Makes no difference if I disable extensions, clear browser data and cache, use browser in safe mode or incognito mode, try different encoding, disable acceleration etc.

Others tested the site display and it seems fine for them. Afraid though that I’m not the only one having the problem. It was the someone I know that had the problem that initially pointed it out to me. Likewise I am having the same problem on two different laptops with different screen sizes and versions of windows and different versions of browsers and also on mobile device. So it is not just a problem with my laptop.

Website is http://simotechnology.com/ and theme is Karma V3.0.4.

Anyone here who has an idea of what’s the problem? How can it be solved? Thanks in advance.