.my-bokeh-container {
    position: relative;
    display: inline-block;
}

#my-bokeh-demo {
    transition: filter 0.33s ease;
}

.my-bokeh-container:hover #my-bokeh-demo {
    filter: blur(3px);
}

.my-bokeh-overlay {
    position: absolute;
    color: white;
    background-color: #000000bf;
    top: 10%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.33s ease;
    padding: 10px;
    border-radius: 5px;
    font-size: 12pt;
}

.my-bokeh-container:hover .my-bokeh-overlay {
    opacity: 1;
}