I assume you mean the spacing on each side of the content?: http://www.screencast.com/t/yLc4XCfd
If so, it’s because you’ve set your content padding to what it is.
Instead, I would keep it uniform on all sides and not make it too high.
Alternatively, you can give it different padding on mobile:
@media (max-width: 768px) {
.one-container .site-content {
padding: 20px;
}
}
Stuff like this is also going to mess things up on mobile: http://www.screencast.com/t/lggTNZne6b0g
You also have a JS error which looks to be caused by your sumome app: http://www.screencast.com/t/Az9oS885N
Notice all the links are blue except classie? It looks like the sumome script doesn’t have a closing </script>
tag.