diff --git a/src/transform.ts b/src/transform.ts
index 4e0b894f..2a61f3ae 100644
--- a/src/transform.ts
+++ b/src/transform.ts
@@ -34,7 +34,12 @@ export function transformCSS(
         // Handle inline stylesheets
         el.innerHTML = css;
       } else if (el instanceof HTMLLinkElement) {
-        // Replace link elements with style elements
+        // Replace link elements with style elements.
+        // We use inline style elements rather than link elements with blob
+        // URLs, as relative URLs for things like images and fonts are not
+        // supported in blob URLs. See
+        // https://github.com/oddbird/css-anchor-positioning/pull/324 for more
+        // discussion.
         const styleEl = document.createElement('style');
         styleEl.textContent = css;
         for (const name of el.getAttributeNames()) {