Dear Khan,
this is a rather complex issue, but let’s have a shot. Please try this CSS:
@media only screen and (min-width: 990px) {
#header #logo-wrap { position: absolute !important; left: 20px !important; float: none !important; }
#nav-primary { position: absolute !important; left: 20px !important; top: 148px !important; }
}
Best,
Andrew | Satori Studio