.w-50-l {
    width: calc(50% - 2px);
}
.w-50-r {
    width: calc(50% - 3px);
}
img.modal-content {
    margin: auto;
    display: block;
    width: 60%;
}
div#img-spinner {
    top: 50%;
    position: inherit;
    width: 3rem;
    height: 3rem;
}