This page has some useful tweaks and customization for the Vantage Theme.

You can add the CSS tweaks to the following interface of your site:

Admin Dashboard -> Appearance -> Customize -> Additional CSS

Remove/Hide the right hand burger menu from mobile devices

Use the following CSS to hide the right hand burger menu shown in mobile devices

.title-bar-right .menu-icon {
    display:none;
}

Header/Listing Cover Image – Remove Grey Filter

The following CSS tweak will remove the grey filter from the cover image on the homepage:

.home-cover.has-image:after {
background: none;
}

The following CSS tweak will remove the grey filter from the listing page’s cover image:

.listing-cover.has-image:after {
background: none;
}