Problem with D3 Choropleth Challenge

Hi, I’m working on the D3 Choropleth Challenge and everything has ben going well. But I just added the state borders in and I’ve got black areas everywhere. Could anybody explain what is happening? Thank You

https://codepen.io/GardDesigns/pen/JBzPBp?editors=0010

You added a .states class for each state path, but it’s not utilized in your CSS.