A hover / overlay title on blog masonry

With Desktop, use this code to Website Tools (under Not Linked) > Custom CSS

/* Blog masonry - Overlay title */
section.blog-item-summary {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    text-align: center;
    opacity: 0;
    transition: all 0.3s ease;
}
section.blog-image-wrapper {
    margin-bottom: 0 !important;
}
.blog-meta-section {
    display: none;
}
section.blog-item-summary * {
    color: white;
}
section.blog-image-wrapper:after {
    content: "";
    background-color: rgba(0,0,0,0.5);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0;
    transition: all 0.3s ease;
}
article.hentry:hover section.blog-image-wrapper:after, article.hentry:hover section.blog-item-summary {
    opacity: 1;
    transition: all 0.3s ease;
}

With Mobile, use this CSS under

@media screen and (max-width:991px) {
article.hentry section.blog-image-wrapper:after, article.hentry section.blog-item-summary {
    opacity: 1 !important;
    transition: all 0.3s ease;
}
}