#mypopupOverlay {
    position: fixed;
    width: 100%;
    height: 100%;
    background-color: rgba(100, 100, 100, 0.85);
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    display: none;
    opacity: 0;
}

img.mypopup {
    cursor: zoom-in;
}

.mypopup-fade-in {
    animation-name: fadeIn;
    animation-duration: 550ms;
    animation-fill-mode: forwards;
}

.mypopup-fade-out {
    animation-name: fadeOut;
    animation-duration: 350ms;
    animation-fill-mode: forwards;
}

#mypopupOverlay img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 100%;
    display: block;
    background-color: #a5a5a5;
    border-color: #a5a5a5;
    border-width: 10px;
    border-radius: 15px;
    padding: 10px;
}

#mypopupOverlay.mypopup-fade-in img {
    cursor: auto;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
    }
}