#pwa-update-notice {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 2000;
    max-width: 24rem;
    padding: 1rem;
    border-radius: .5rem;
    color: #fff;
    background: #212529;
    box-shadow: 0 .5rem 1.5rem rgba(0, 0, 0, .3);
}

#pwa-update-notice[hidden] { display: none; }
#pwa-update-notice p { margin: 0 0 .75rem; }
#pwa-update-button { width: 100%; }