.image-grid {
    width: 100%;
    float: left;
}

.image-grid-column {
    display: block;
    position: relative;
    float: left;
    min-height: 1px;
    background-color: #eeeeee;
}

.small-col {
    width: 25%;
}

.medium-col {
    width: 50%;
}

.large-col {
    width: 100%;
}

.image-grid-column-image {
    display: block;
    position:relative;
    float: left;

    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
}

.small-image {
    width: 50%;
}

.small-image:before {
    content: "";
    display: block;
    padding-top: 100%;
}

.large-image {
    width: 100%;
}

.large-image:before {
    content: "";
    display: block;
    padding-top: 100%;
}

.upright-image {
    width: 50%;
}

.upright-image:before {
    content: "";
    display: block;
    padding-top: 200%;
}

.lengthwise-image {
    width: 100%;
}

.lengthwise-image:before {
    content: "";
    display: block;
    padding-top: 50%;
}

@media (max-width: 767px) {
    .image-grid-column {
        width: 100% !important;
    }
}