When you want your Grid.js tables to better match the style of your website or application, you can use custom CSS to override the default appearance. Custom CSS gives you control over key elements such as table headers, rows, and individual cells, allowing you to change colors, fonts, borders, and spacing. This approach makes it possible to create a cohesive visual experience that fits your design requirements, whether you want a minimalist look, highlight certain columns, or simply match your brand colors. By targeting specific CSS classes or elements generated by Grid.js, you can fine-tune every aspect of the table's presentation.