jMonkeyEngine-website/static/js/maintenance/maintenance.css

@keyframes jme-a-maintenance-pulse {
    0% {
        opacity: 0.7;
    }
    50% {
        opacity: 1.0;
    }
    100% {
        opacity: 0.7;
    }
}

#jme-a-maintenance >  *{
    all: initial;
    font-weight: bold;
    font-family: monospace;
    font-size: 1em;
    color:inherit;
}
#jme-a-maintenance {
    all: initial;
    text-shadow: unset;
    display: block;
    z-index: 99999;
    position: fixed;
    bottom: 0;
    left: 0;
    min-width: 40vw;
    max-width: 100%;
    background-color: #c07302;
    padding: 1em;
    border-top-right-radius: 0.6em;
    color: rgb(5, 5, 5);
    display: flex;
    align-items: center;
    opacity: 0.85;
    user-select: none;
    cursor: pointer;
    box-shadow: 0 0 0.5em #3a2300;
}

#jme-a-maintenance.jme-a-maintenance-inprogress {
    background-color: #adb900;
    animation: jme-a-maintenance-pulse 2s infinite;
    color: rgb(88, 25, 0);
}

#jme-a-maintenance.jme-a-maintenance-completed {
    background-color: #91ff00;
    color: rgb(0, 26, 97);
}

#jme-a-maintenance>img {
    all: unset;
    height: 1.4em;
    padding-right: 0.5em;
}