feat: add warning for missing home page

Jacky Zhao

2023-09-22 a897cc1f531844a2e4da36f8712b7aedec0c5824

 quartz/components/Header.tsx

@@ -9,7 +9,7 @@
  display: flex;
  flex-direction: row;
  align-items: center;
  margin: 2em 0;
  margin: 2rem 0;
  gap: 1.5rem;
}