@media (min-width: 544px) {
    .col-xsm-6 {
        width: 50%;
    }
}

@media (min-width: 768px) {
    .col-sm-6 {
        width: 50%;
    }
}

@media (min-width: 992px) {
    .col-md-4 {
        width: 33.33333333%;
    }
}
.thumbnail {
    position: relative;
    padding-bottom: 56.25%;
    background-size: cover;
    background-position: center;
    background-color: #fff;
    background-repeat: no-repeat;
}
@media (min-width: 768px) {
    .thumbnail {
        padding-bottom: 100%;
    }
}

.thumbnail > a {
    bottom: 0;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    z-index: 1;
}

.thumbnail .caption {
    display: flex;
    align-items: flex-end;
    padding: 0 16px 12px;
    position: absolute;
    bottom: 0;
    width: 100%;
    background: linear-gradient(to bottom,rgba(0,0,0,0),rgba(0,0,0,.85));
    height: 72px;
    border-radius: 0 0 8px 8px;
}

@media (min-width: 768px) {
    .thumbnail .caption {
        padding: 0 24px 20px;
    }
}

.caption > h2,
.caption > h2 > a {
    color: #fff;
    margin-top: 0;
    margin-bottom: 0;
    font-size: 20px;
    line-height: 22px;
    font-weight: 400;
    text-decoration: none;
    text-transform: capitalize;
    padding: 0;
}

@media (min-width: 768px) {
    .caption > h2 {
        font-size: 24px;
    }
}