Header in fix content page

[quang-GTI]

Could you please visit http://geotechinternational.com/index.html and advise how to use the header correctly in case my page is in fix content.
when viewing the web in small browser size the header show blank space at the top right conner.
My page content is set to page width 1080 and it is not relative horizontal sizing.

Thanks and Regards

[Pablo]

Your website is not responsive, so on smaller screens the browser will add a scrollbar at the bottom of the page.
The header will only be 100% of the viewport.

To make your website responsive you can either add breakpoints or use layout grids.
http://wysiwygwebbuilder.com/layout_modes.html