Hey ,
Add this into the Custom CSS box located in your Salient Options panel (Make Sure there are no red cross in the Box) :

@media only screen and (max-width: 1000px) and (min-width: 1px) {
    body[data-slide-out-widget-area="true"] header#top #logo, #header-outer[data-mobile-fixed="1"] header#top #logo {
        display: table !important;
        margin: auto;
    }
}

Bes.t