Clean TweetDeck to display on screen

gistfile1.css

@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document url("https://web.tweetdeck.com/") {
    #nav-column,
    #topbar {
        display: none !important;
    }
    
    #container {
        top: -3px;
    }
    
    .column {
        width: 50% !important;
    }
}