I was looking at my project css file and noticed the entries at the end for Mrs Eaves indicates "sans-serif" as the fallback for all of the Mrs Eaves variants but not the main Mrs Eaves, even though all of the fonts are themselves serifed. Why is this?

.tk-mrs-eaves-roman-small-caps { font-family: "mrs-eaves-roman-small-caps",sans-serif; }
.tk-mrs-eaves-roman-all-small-ca { font-family: "mrs-eaves-roman-all-small-ca",sans-serif; }
.tk-mrs-eaves-roman-lining { font-family: "mrs-eaves-roman-lining",sans-serif; }
.tk-mrs-eaves-roman-all-petite-c { font-family: "mrs-eaves-roman-all-petite-c",sans-serif; }
.tk-mrs-eaves-roman-petite-caps { font-family: "mrs-eaves-roman-petite-caps",sans-serif; }
.tk-mrs-eaves { font-family: "mrs-eaves",serif;

Project bun1umg