Hi Guido, I have this same issue where the background image/header image is not responsive on a andriod phone, you can only see a portion of the corner of the image. I changed the background-size: contain;
on both home-background and header-wrapper in the css and it is still not resizing the header on an android phone.
When I changed those both to contain instead of cover, it made the background on the home page repeat itself horizontally and it didn’t change the size of the header on the android phone. So I changed it back for now…
http://www.healthyhaircare.com/wordpress/
Here is what I have for both those sections in my css.
}
.home-background {
background-image: url(img/homebackground.jpg);
background-attachment: fixed;
background-size: contain;
min-height: 200px;
}
.header-wrapper {
background: #333;
background-image: url(http://www.healthyhaircare.com/wordpress/wp-content/uploads/2014/06/homebackgroundhorse.jpg);
background-attachment: fixed;
background-size: contain;
min-height: 200px;
}