previewlinksBlog.css

.mini-preview-anchor {
    display: inline-block;
    position: relative;
    white-space: nowrap;
}

.mini-preview-wrapper {
    -moz-box-sizing: content-box;
    box-sizing: content-box;
    position: absolute;
    overflow: hidden;
    z-index: -1;
    opacity: 0;
    margin-top: -4px;
    border: solid 1px #000;
    box-shadow: 4px 4px 6px rgba(0, 0, 0, .3);
    transition: z-index steps(1) .3s, opacity .3s, margin-top .3s;
    height: auto;
}

.mini-preview-anchor:hover .mini-preview-wrapper {
    z-index: 2;
    opacity: 1;
    margin-top: 6px;
    transition: opacity .3s, margin-top .3s;
}

.mini-preview-loading, .mini-preview-cover {
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;    
}

.mini-preview-loading {
    display: table;
    height: 100%;
    width: 100%;
    font-size: 1.25rem;
    text-align: center;
    color: #f5ead4;
    background-color: #59513f;
}

.mini-preview-loading::before {
    content: 'Loading...';
    display: table-cell;
    text-align: center;
    vertical-align: middle;
}

.mini-preview-cover {
    background-color: rgba(0, 0, 0, 0); /* IE fix */
}

.mini-preview-frame {
    border: none;
    -webkit-transform-origin: 0 0;
    transform-origin: 0 0;
    max-width: unset;
}