body {
    font-family: Verdana, sans-serif;
    margin: 0;
}

#container {
    text-align: center;
}

h1 {
    margin: 0;
    padding: 30px;
    background-color: #141459;
    color: white;
}

.tooltip {
    opacity: 0;
    position: absolute;
    text-align: center;
    padding: 8px;
    background: lightsteelblue;
    border: 1px solid #333;
    border-radius: 5px;
    pointer-events: none;
}

#legend {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}