siddharth030

If i understand you problem correctly you want your header to appear 35px below from the top to do that just make changes in setting of sticky header plugin there is an option space between top and sticky element.

If you want just a sticky header and you are facing the overlap problem:-
Set z-index in plugin as 99999 and then in style.css find
/*Header*/
header{padding:0;}
add one more line and your code will look like this :
header{background:white;padding:0;}

Actually the problem is header is transparent type but when you set background color no need for any other padding.

If i understand your question correctly that you want the top header menu fixed then you do two things.

1. Download sticky header plugin and then in plugin settings set z-index to 99999 and as id type #header.

2. Go in style.css of theme and find this line /* Header */
after this you will find
#header{padding: 0;}
just add one more line like
#header(background:white;padding:0;)

If you want to change your header color change it in background:white instead of white use any color or hex you want