article.hentry {
    width: 850px;
    max-width: 100%;
    margin: 0 auto;
    padding: 30px 10px;
    position: relative;
    background-color: var(--color-white);
}

article.hentry:before {
    content: "";
    position: absolute;
    z-index: -100;
    left: 0;
    right: 0;
    top: 0;
    bottom: 100px;
    box-shadow: 0 0 50px rgba(0,0,0,.075);
}