diff --git a/bzGraflow.js b/bzGraflow.js
index 3c06e67..b7f7176 100644
--- a/bzGraflow.js
+++ b/bzGraflow.js
@@ -143,18 +143,27 @@ class BZgraflow extends Buildoz{
             }
         }
 
-        // Now load styles (once)
+        // Now load styles
         const isIsolated = this.hasAttribute('isolated')
-        if(isIsolated || !BZgraflow._loadedNodeStyles.has(url)) { 
-            const styles = doc.querySelectorAll('style')
+        const styles = doc.querySelectorAll('style')
+        if(isIsolated) {
+            // Shadow DOM: styles are per-instance
             styles.forEach(styleEl => {
                 const style = document.createElement('style')
                 style.textContent = styleEl.textContent
                 this.mainContainer.appendChild(style)
             })
-            // In non-isolated (light DOM) mode, styles apply globally so we can de-dupe across instances.
-            // In isolated (shadow DOM) mode, styles must be injected per instance.
-            if(!isIsolated) BZgraflow._loadedNodeStyles.add(url)
+        } else {
+            // Light DOM: inject into document.head once per nodesFile url
+            if(!BZgraflow._loadedNodeStyles.has(url)) {
+                styles.forEach(styleEl => {
+                    const style = document.createElement('style')
+                    style.textContent = styleEl.textContent
+                    style.dataset.bzgfNodesStyle = url
+                    document.head.appendChild(style)
+                })
+                BZgraflow._loadedNodeStyles.add(url)
+            }
         }
         this.dispatchEvent(new CustomEvent('nodesLoaded', {
             detail: { url },
@@ -302,6 +311,9 @@ class BZgraflow extends Buildoz{
         if(pos === 'static') oldEl.style.position = 'relative'
         newEl.style.position = 'absolute'
         newEl.style.inset = '0'
+        // Override bz-graflow's default width/height (100vw/50vh) when used as an embedded overlay
+        newEl.style.width = '100%'
+        newEl.style.height = '100%'
         newEl.style.display = 'block'
         oldEl.appendChild(newEl)
     }