diff --git a/web/canvas.ts b/web/canvas.ts
index bf2ff5d..b957bcb 100644
--- a/web/canvas.ts
+++ b/web/canvas.ts
@@ -541,7 +541,17 @@ export function paintMeasure(document: Document): () => void {
     style(label, [
       'position:fixed',
       'top:0.25rem',
-      `left:${Math.round(box.left + 4)}px`,
+      /*
+        Outside the measure, past the RIGHT guide.
+
+        It sat just inside the left edge, which is on top of the page — over the logo, on this site —
+        and it is not part of the page. The margin is the one place on screen that belongs to the
+        editor rather than to the site, so the number that describes the measure goes there.
+
+        Right rather than left because the eye reads the guide, then the width: the label is the answer
+        to the line it sits beside, and the right margin is the one a wide frame actually has room in.
+      */
+      `left:${Math.round(box.right + 6)}px`,
       'font-size:0.625rem',
       'font-family:ui-sans-serif, system-ui, sans-serif',
       `color:${ACCENT}`,