Untitled

.ecom-product-single__picker-images-list .ecom-variant-disable:after{
    content: "";
    height: 100%;
    width: 1px;
    position: absolute;
    display: block;
    left: 45%;
    top: 0%;
    transform: rotate(-45deg);
    border: solid #000;
}
.ecom-product-single__picker-images-list .ecom-variant-disable{
    position: relative;
}