Reply To: header picture not responsive in mobile

Hello Siegmar Franke ,

Since The header image in theme is used as Background Image on fixed size, it is normal to show like this.
The header Height here Appearance => Customize => Header Options => Header Image used for all devices. If you want to decrease the height on the mobile, you can use following custom CSS:

@media only screen and (max-width: 767px){
	.inner-main-title {
            height: 200px;
        }
}

Best Regards!
Acme Themes