Hi guys, I have just looked through your website via my smartphone and I noticed one small issue. When I scrolled to the very bottom I did not find "up" button that leads to the top of the page. There definitely should  be a button available that leads to the top of the page. Since your page is way too long it is quite inconvenient to scroll the page up manually. This feature is present in all modern websites. It is my usability suggestion for you guys.