.instagram-images img
{
    width: 100%;
}
.instagram-images a {
    color: white;
    margin: 1px;
}

.instagram-images {
    line-height: 0;
    -webkit-column-count: 2;
    -webkit-column-gap: 0px;
    -moz-column-count: 2;
    -moz-column-gap: 0px;
    column-count: 2;
    column-gap: 0px;
}

.instagram-images img {
    width: 100% !important;
    height: auto !important;
}