.picture-panel {
    display: grid;
    height: 100%;
    grid-template-columns: auto 220px 70px 220px 70px 220px auto;
    grid-template-rows: auto 220px auto;
}

.grayed-out {    
    filter: grayscale(1.0);
    opacity: 0.7;   
}

.flash {
    box-shadow: 0px 0px 22px 22px rgb(255 255 128);
    /*animation: flash-tile 250ms alternate 3;*/
}


@keyframes flash-tile {
    0% {
        box-shadow: 0px 0px 22px 22px rgb(255 255 128);
    }

    100% {
        box-shadow: none;
    }
}