html, body {
    font-family: Univers, Arial, sans-serif;
    height: 100%;
}

.button rect {
    stroke: green; /* navy 40% */
    stroke-width: 2px;
    stroke-opacity: 1;
    fill: rgba(255, 255, 255, 0.0);
}

.button rect.active {
    fill: rgba(9, 181, 0, 0.2);
}

.button text.active {
    fill: white;
}

.button text {
    font-size: 30px;
    fill: green;
    pointer-events: none;
    text-anchor: middle;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
}