html, body {
    height: 100vh;
    margin: 0;
    padding: 0;
    background: lightgrey;
    overflow: hidden;
}

#container {
    position: relative;
    width: 100vw;
    height: 100vh;
    background: white;
    border: 1px solid #ccc;
    overflow: hidden;
}

.graph-title {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 32px;
    color: #333;
    z-index: 5;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 5px 10px;
    border-radius: 5px;
}