slideshow images shrunk automatically.

HI,

I am using Galiana template, and I would like to ask a question about the slideshow at the top of the homepage.

I upload two 1920X800px images to the folder image path of Noo slideshow module, but the slideshow images display on the homepage shrunk to 1048X437px automatically.

I prefer the slideshow images to be at 1920px width, just like the slideshow images in demo.joomlaux.com/#galiana . How can I fix this problem?

URL savorlifestyle.com/

thank you