.main-header{
    background: url(../media/205734/marketdatasolutionsbanner.jpg) 50% 50% no-repeat;
    background-size: cover; 
}


@media screen and (max-width: 1024px) {
    .main-aside .documentation-block{
        order: 1;
    } 

    .main-aside .aside-navigation{
        order: 2;
    }    
}