Problem with padding between slidereel images

Site URL: https://www.gukkhwa.com/fabulas-creaturae

Hello - 

I wanted padding between the images of my slidereel while keeping the hover effect, but can't seem to figure out how to keep the padding in place for the hover effect. 

I found the css styles from the forum here, but not sure what I'm missing. 

Find this CSS & adjust number 10

.gallery-reel-item img {
    left: 10px !important;
}

16 hours ago, tuanphan said:

Find this CSS & adjust number 10

.gallery-reel-item img {
    left: 10px !important;
}

 

I tried adjusting the number but still overflows when it zooms in