diff --git a/frontend/src/components/Dashboard/RingWidget.tsx b/frontend/src/components/Dashboard/RingWidget.tsx
index 5a2d1f7..dda07e9 100644
--- a/frontend/src/components/Dashboard/RingWidget.tsx
+++ b/frontend/src/components/Dashboard/RingWidget.tsx
@@ -290,7 +290,11 @@ export function CentreReading({
       >
         {children ?? written}
         {unit ? (
-          <span className="text-[0.4em] text-muted-foreground">{unit}</span>
+          // Relative to the fitted reading, so an inline value rather than an
+          // arbitrary Tailwind class.
+          <span className="text-muted-foreground" style={{ fontSize: "0.4em" }}>
+            {unit}
+          </span>
         ) : null}
       </span>
     </div>