If you look – the title blog appear on the left and articles appear on the right
Can’t see this from the link you provided, but you mean on the “blog” blogroll-page? In that case you should be able to switch templates for that page from the dashboard:
On pages, Twenty Seventeen allows you to pick between a one and two column layout. This can be changed via Customizer > Theme Options. The theme defaults to the two-column layout, which displays the page title in one column, and the page content in the other.