Fixed Section spanning full width of browser window

Site : https://www.ribetmyles.co.uk/landing

Rest of site: www.ribetmyles.co.uk

I have made a landing page for my client, they wanted a bespoke header that was different from the rest of the site so I disabled the header and am using a section block as the 'header'. Using the below:

<style>
  #header, header {
  display: none!important;}
</style>

They then wanted this block to be fixed to the top of the page and viewable so the phone number was always accessible which I have done, in the CSS:

[data-section-id="65855b7e958eebc0f9ca9b3e"] {
  position: fixed;
  z-index: 1;
}

The issue i find now is that the block does not 'fill the page' and seems to stop at a certain point (site container size? not sure) 

Tried a bunch of things including :

// FULL WIDTH SECTION section //

[data-section-id="65855b7e958eebc0f9ca9b3e"] { overflow-x: hidden !important; overflow-y:hidden !important; } section[data-section-id="65855b7e958eebc0f9ca9b3e"] { .content-wrapper { padding: 0px !important; margin: 0px auto; display: contents; } .sqs-layout .sqs-row .sqs-block { padding-bottom: 0px !important; padding-top: 0px !important; } }

Implementing this then stops the section from being fixed.....any help here would be much appreciated 

Thanks

Which screen size do you see problem? It looks fullwidth to me

@RhysCunningham Looks good to me - 32" widescreen