website layout

Hi there,

How can I make my content on the screen?

Not sure if I fully understand what you meant by "on the screen"? Just checked the page and everything looks normal to me:
https://www.screencast.com/t/Xescy8hh

How can I make the text of the articles at the center of the screen?

Hi there,

if you want to push the container to the right so the Content looks centered and the sidebar occupies the right handside then you can add this CSS:

@media(min-width: 1560px) {
    #content {
        left: 180px;
        position: relative;
    }
}

But it will only work on wide screens, as per the @media min-width. At 1560px the screen is wide enough to do this, on smaller screens the sidebar would overflow the viewport causing horizontal scroll..