diff --git a/src/forest/reward.ts b/src/forest/reward.ts
index 745fcb1..96200f8 100644
--- a/src/forest/reward.ts
+++ b/src/forest/reward.ts
@@ -115,7 +115,7 @@ async function generateForestElement(db: IDBDatabase): Promise<{
 		ELEMENT_TYPES[Math.floor(Math.random() * ELEMENT_TYPES.length)]!;
 
 	// Build prompt
-	const prompt = `Kinderbuch-Illustration, Aquarell-Stil, ${elementType}, magischer Wald, warm, einladend, fuer Kinder, Pastellfarben, kein Text, einzelnes Element auf transparentem Hintergrund`;
+	const prompt = `Kinderbuch-Illustration, Aquarell-Stil, ${elementType}, magischer Wald, warm, einladend, fuer Kinder, Pastellfarben, kein Text, einfarbig heller gruener Hintergrund`;
 
 	// Generate image
 	const blob = await generateImage(prompt, referenceImages, config);
diff --git a/src/styles/main.css b/src/styles/main.css
index 0896aef..cba954e 100644
--- a/src/styles/main.css
+++ b/src/styles/main.css
@@ -417,9 +417,11 @@ h3 {
 .forest__element img {
 	max-width: 100%;
 	max-height: 100%;
-	object-fit: contain;
-	border-radius: 8px;
+	object-fit: cover;
+	border-radius: 50%;
 	filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15));
+	mask-image: radial-gradient(ellipse 70% 70% at center, black 50%, transparent 100%);
+	-webkit-mask-image: radial-gradient(ellipse 70% 70% at center, black 50%, transparent 100%);
 }
 
 .forest__element--new {