I was tiding up my page for days now, and a reason is rather simple - it HAS to be simpler. There is absolutely no need to shove thousand things and codes on one page or use the elements that are way too small.
If you can't use a website on mobile phone with decent screen size, it is useless. Most of the people only use their smartphones and they come with a few limitations.
Action buttons have to be bigger, images have to be responsive to fit the screen. You have to get rid of everything that is not absolutely essential.