.boldr-brand-item {
    display: block;
    padding-bottom: 100%;
}

.boldr-brand-item-logo {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.boldr-brand-item-logo img {
    width: 100%;
    display: block;
}