pandorasan

Can you show me your code ?

Try something like this:

<header id="header">
<a href=“https://www.yourwebsite.com”><img src="https://www.yourwebsite.com/wp-content/uploads/2015/02/header.jpg" style="display:block;margin-left:auto; margin-right:auto;width:1380px;" alt="header"></a>

Apply this in child theme, file header.php

Look for the header class in the code, and change it to above. CSS details might be different for you.

@makway

When here :
Theme Options – Header

I only see 3 options :
Header Ads ( on/off )
Custom Logo ( upload file )
Site Description ( on/off )

@makway
True, that is also an option. For me however it resulted in a small logo on the left top of the header, so I figured I needed to style it anyway in css, as I wanted a full size header background.
I guess both would work.

cool ??

Hi,

Create a child theme first, as you might want to change more stuff later.
Upload your banner to your wp media library.
Then put this in your child theme css:

#header
{
  background-image: url("https://yourwebsite.com/wp-content/uploads/2015/02/yourheader.jpg");
}

You might want to tweak some more stuff and add smaller banner images to have the responsive thing work more smoothly for your header, but this is a start I think.