How do I get full-width of the screen in /information pages?

Hi!
I am using version 3.0.3.8
I need to get full-width of the screen in some of my /information pages.

This is the code I use:
<div class="container-fluid full-width" style="background:green">
<div class="text-center">TEST</div>
</div>

However, container-fluid does not work. The background stays central and only covers around 992px.

Is there a way to get full-width of the screen? Please advise!

you did not mention the theme name. The default theme uses the box size layout so you need to make the changes into the THEME's CSS file and TPL of the information page.
If you wrote the code inside the information page from admin where people write the content. It won't work.
Without knowing the theme, none of us help you.

You need to edit the CSS, maybe something like

.container-fluid.full-width{
width:100%!important;
}

To help add CSS, you can use a module in OpenCart, for example this

https://www.opencart.com/index.php?rout ... n_id=42667