How can the margins on the page disappear?

Travelify
1

Good day
I want my website to be displayed across the entire screen and the border on the sides to disappear. How can I realize this?
Many thanks for the help!
Here you may see the page.
www.kilianschule.de

2

Hi @Peter

This theme is not optimized to have such a layout, I can provide you with the custom CSS though.
Please add this CSS code in the Appearance > Customize > Additional CSS:

.wrapper {
    max-width: 100%;
}

Regards,