Unable to Resize header

Im unable to resize my header how do i resize it? Ive tried smaller pixals but its not working.

 

Hello,

Do let us know your website link.

 

famousgoat.com

 

Hello,

I think you are talking about banner image.

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.banner {
height: auto;
}

 

My header is still extending to the Search bar.
Check it out famousgoat.com

 

Hello,

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.banner img {
width: 90%!important;
}