How can I widen my blog post layout on the Barberry theme?

Hi don’t know why but layout of my blog post looks pretty “tight”.

I need that header image and text cover the page more widely.

here page details:

https://vaigustando.it/blogs/i-produttori-di-vaigustando/pat-del-colmel

I’m using Barberry theme (https://rt-barberry.myshopify.com/)

My site is https://vaigustando.myshopify.com/

psw: vaigustando123

I don’t know if there is any set up to be set in the page blog template or it’s a matter of .css

Here how the theme page is:

The red area are the look i would like compared to the actual size

The lay out have to work good also noThank you in advance for supporting me.

Hi @ellisbosisio ,

This is Richard from PageFly - Landing page builder, I’d like to suggest this idea:
Step 1: Go to Online Store->Theme->Edit code
Step 2: Asset->/theme.css->paste below code at the bottom of the file:

.template-article #site-primary {
    -ms-flex: 0 0 100%;
    flex: 0 0 100%;
    max-width: 100%;
}
.template-article #site-primary .article__listing .col-12 {
    -ms-flex: 0 0 100%;
    flex: 0 0 100%;
    max-width: 100%;
}

I hope it would help you
Best regards,

Richard | PageFly