Fix #2 - modal close button not visible

src/styles/variables/colors.scss

@@ -94,6 +94,10 @@
     --text-invert: #000 !important;
     --text-light: var(--grey-300) !important;
     --text-strong: var(--grey-900) !important;
-  }
 
+      // svg uses currentColor, change the color to keep the modal close X visible
+      .close {
+        color: var(--grey-900);
+      }
+  }
 }