How do I change the vertical size of the slider images in the blackbird pro theme?

Hi,
How do I change the vertical size of the slider images in the blackbird pro theme? The current 'Recommended size' (950px width x 390px height) is way too big.

I want to upload a vertically smaller image (height 250px by 950px width).

When I attempted to upload a vertically smaller image in the slider it attempts to resize the image, streching and pixelating the image to match the 'recommended size'.
Thx

 

Hello,
Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.flexslider .slides img {
width: 950px;
height: 250px;
}

This will solve your issue.

 

Works like a treat, Thx