D3 is not a graphics library, so it's certainly not D3 itself making anything look nice. D3 enables you to easily build great visualization, but it doesn't actu

D3 is not a graphics library, so it's certainly not D3 itself making anything look nice. D3 enables you to easily build great visualization, but it doesn't actually draw anything directly or provide you with a theme or anything like that. D3 pure and simple binds data to DOM elements and keeps the relationship updated, but nothing more. Those DOM elements could be pure text, or tables, or whatever else you want. It just so happens that D3 works well when bound to SVG elements, but that's purely up to you.