.at-article-modern {
    position: relative;
    display: table;
    width: 100%;
    height: 100%;
    background: no-repeat center center;
    text-align: center;
}

.at-article-modern::before {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    top: 0;
}

.at-article-modern .at-am-contentContainer {
    position: relative; /** stack over transparent color*/
    display: table-cell;
    vertical-align: middle;
}