rilwis/meta-box

.rwmb-image-item {
    position: relative;
    float: left;
    margin: 0 12px 12px 0;
    list-style: none;
    box-sizing: border-box;
    cursor: move;
}
.rwmb-image-item .rwmb-file-icon {
    width: 150px;
    height: 150px;
    margin-right: 0;
}

.rwmb-image-actions {
    position: absolute;
    z-index: 2;
    right: 8px;
    top: 8px;
    opacity: 0;
    transition: opacity .2s;
    color: #fff;
}
.rwmb-image-edit,
.rwmb-image-delete {
    color: inherit;
    text-decoration: none;
}
.rwmb-image-actions a:hover {
    color: #fff;
    opacity: .8;
}
.rwmb-image-overlay {
    position: absolute;
    z-index: 1;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: #000;
    opacity: 0;
    transition: opacity .2s;
}
.rwmb-image-item:hover .rwmb-image-actions {
    opacity: 1;
}
.rwmb-image-item:hover .rwmb-image-overlay {
    opacity: .6;
}
.rwmb-image-item .rwmb-edit-media:after {
    display: none;
}

@media (max-width: 767px) {
    .rwmb-image-actions {
        opacity: 1;
        z-index: 99;
    }
}