Increase size of images to left of product photo

How do I increase the size of the photos in the stack of photos to the left? I would like them to extend to the bottom of the main photo please

@tuanphan @Agha_Waqas any ideas? 

Thanks in advance

Pete

Add to Design > Custom CSS

/* product thumbanils */
.tweak-product-basic-item-thumbnail-placement-side .ProductItem-gallery .ProductItem-gallery-scroll {
    max-height: 100% !important;
}
.ProductItem-gallery-thumbnails {
    margin-bottom: 0 !important;
    display: flex;
    flex-direction: column;
    justify-content: space-between !important;
    align-items: flex-end !important;
    height: 100% !important;
}
.ProductItem .ProductItem-gallery-scroll::after {
    height: 0 !important;
    display: none !important;
}
.tweak-product-basic-item-thumbnail-placement-side .ProductItem-gallery .ProductItem-gallery-scroll {
    max-height: 100% !important;
    height: 100vh;
}

hey man. THis spread them out but didn't increase their size! 

You want to increase size or make them extend to the bottom?

I want to increase the size!

hi! It has been solved. Sorry for the late reply I got locked out of my account!

Thanks again for all the help

Pete