Free space above Header

Hello everybody, I am using the Parallax Frame theme on my website: www.tayfunselcuk.com So far I am quite happy with this theme, it's beautiful and fits my needs in a simple and effective way. There are some things though that I had to manually adjust via CSS but i'm not really a professional in CSS, so here are some things that I still have trouble with: 1. My header (including its position and size) above the slider on the homepage is fine. When I go to one of the menu points (Portrait or Contact for example) the header position is too far down and there is a lot of free space above the site title and the menu points. This problem occurs via mobile phone view as well. How can I remove this free space, so that the header sits at the same position as it does on my homepage? 2. On my homepage below the slider there are 3 pictures/links (header highlight content, i think it was). I just want those 3 but next to the two smaller ones below there is some free space with grey background color. This problem only occurs on my computer, not via mobile phone view. How can i remove this free space or adjust the width of the 2 smaller ones so that they actually fit the complete site width? 3. Mobile view: When I open the menu window (opens up at the right side), there is no way to close the menu again. Any suggestions how to fix this? Thanks in advance! If I should provide additional information about the CSS that I have used so far, please let me know. Best regards, Tayfun