Gallery Pop-Up / Lightbox Arrows

Hello, I’ve added in some background circles behind the arrows in the lightbox / pop-up galleries but cannot see them. Can you confirm if you see them or what I have incorrectly in the code? One page that uses them is https://3das.com/pompano-beach-renderings/.

/* Gallery Popup Lightbox Arrows  */
button.mfp-arrow.mfp-arrow-right.mfp-prevent-close {
    border-radius: 50%!important;
    background: #03ffff5e!important;
    width: 60px!important;
    height: 60px!important;
    margin: -30px 20px 0px!important;
}
button.mfp-arrow.mfp-arrow-left.mfp-prevent-close {
    border-radius: 50%;
    background: #03ffff5e;
    width: 60px;
    height: 60px;
    margin: -30px 20px 0px;
}

/* End Gallery Popup Lightbox Arrows  */