Hi Slmon,

Thanks for contacting us.

Do you have an example we can relate with please?

Thanks.

Hey SImon, 
Please provide the page URL so that i can write up the custom CSS for what's possible.
Thanks

Hey Again,

Seems like you already got it working : 

Thanks 

Also use

Add this into the Custom CSS box in your Salient Theme Options panel (We write all Custom CSS in the Live Browser to ensure accuracy. If you cannot see any changes, make sure there is no red cross in the Custom CSS Box as any syntax error would cause all CSS under that line of code to not show up on the Frontend):

@media only screen and (max-width: 690px) {
    #page-header-bg .container {
        margin-top: 50% !important;
    }
    .page-header-bg-image {
        background-size: 197% !important;
        background-position-y: top !important;
        background-position-x: 100% !important;
    }
}        

Thanks

Hey Again,

Use this revised CSS only which checks whether the Image div is there or not.

@media only screen and (max-width: 690px) {
    #page-header-bg .page-header-bg-image-wrap~.container {
        margin-top: 50% !important;
    }
    .page-header-bg-image {
        background-size: 197% !important;
        background-position-y: top !important;
        background-position-x: 100% !important;
    }
}

Thanks