Adjust image size

Hey Alan,
Please try this code in the General Styling > Quick CSS field or in the WordPress > Customize > Additional CSS field:

#top.woocommerce-page #av_product_description .av-parallax {
    transform: none!important;
height: 400px !important;
}
#top.woocommerce-page #av_product_description .av-parallax-inner {
height: 340px !important; 
}
#top.woocommerce-page #av_product_description .av-section-color-overlay-wrap {
height: 400px !important;
}
.html_header_top.html_header_topbar_active.html_header_sticky #top #main {
    padding-top: 60px !important; 
}

Best regards,
Mike