Product carousel arrows invisible!

Site URL: https://www.nolonstacey.com/hares/sitting-hare-ii-b

Hi, 

I'm having an issue with my product carousel arrows not being visible.  It's fine with a product with a dark background, like the Red Kite, but many of my images have white backgrounds so the white arrows vanish.  This would have been an easy fix in 7.0, but I can't for the life of me find a way to change the colour of (or add a background to) the carousel arrows so they're visible no matter what the background.  

I've searched and searched, so any ideas would be greatly appreciated.  

Thanks in advance (and anticipation!!)

Thank you so much.  That was exactly what I was looking for.  I tried every variation I could think of - so simple when you see the answer!!  Thanks again. 

@paul2009 

1. Right now the code I have is only adding arrows to my mobile view.  Is there a way to add arrows the the desktop view also?

Current CSS:

/* Product slide arrows control */
@media screen and (max-width:767px) {
.ProductItem-gallery-carousel-controls {
    display: flex !important;
}
/* arrows background */
.ProductItem-gallery-carousel-controls * {
    background: white;
}
.ProductItem-gallery-carousel-controls>div {
    justify-content: center !important;
}
}

2. Also, I am interested in a similar arrow style like the described in the original post here.  Can I have black arrows with a white or grey background?

joeystephensmusic.com

password: helpneeded

Try edit code to this

.ProductItem-gallery-carousel-controls {
    display: flex !important;
}
/* arrows background */
.ProductItem-gallery-carousel-controls * {
    background: white;
}
.ProductItem-gallery-carousel-controls>div {
    justify-content: center !important;
}