This is qlibra About us page, that showcases a page with text only. You can edit or create pages from :
Administrative panel Main menu > Content > Pages
This kind of pages are convenient for information that is not regularly changed - contact pages, terms and condition pages, cookies, etc.
You can attach files, add gallery, add a map or contact form to a page.
In order to access your page you have to link it to menu or sub menu element.