#product-network-graph {
    width: 100%;
    height: 800px; /* You can adjust this height */
    border: 1px solid #ddd;
    background-color: #f9f9f9;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    border-radius: 8px;
}

/*
Note on Fonts: The diagram will now automatically use your theme's default font.
If you want to force a specific font, you can uncomment and edit the 'face' property
in the product-graph.js file inside the options object.
*/