change size of picture on front page?

Hey there!
Can you tell me how I can change the size of the picture on the front page? I mean the portrait of mine!
http://christophschoeler.de/
Thanks a lot!

Christoph

Hello there,

I hope you are doing well today.

You can use the following CSS code to change the image size by going to Appearance > Customize > Additional CSS and pasting it there.

/*Portrait image size*/
img.cast-shadow.img-responsive {
    width: 500px;
}

Best Regards,
Support