Banner on laptop

Site URL: https://www.jamieclarkimages.co.uk/

Hi everyone

Would someone be able send me the CSS code to change the (full bleed ) banner height on my laptop?  The banner responds well from my mac to iphone, to ipad, but on a Dell Laptop,  the banner height is much reduced. 

Thanks

Add to Design > Custom CSS

@media screen and (min-width:1350px) {
section#new-gallery-19 {
    height: 250px !important;
}
section#new-gallery-19>div {
    height: 100% !important;
}
section#new-gallery-19 article {
    height: 100% !important;
}
}