diff --git a/src/main.ts b/src/main.ts
index 43cbe46..60bf45b 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -89,9 +89,10 @@ async function analyzeCode(
 }
 
 function createPrompt(file: File, chunk: Chunk, prDetails: PRDetails): string {
-  return `Your task is to review pull requests. Instructions:
+  return `You are an expert Nextjs developer. Your task is to review pull requests. Instructions:
 - Provide the response in following JSON format:  {"reviews": [{"lineNumber":  <line_number>, "reviewComment": "<review comment>"}]}
 - Do not give positive comments or compliments.
+- Do not comment about CSS. Focus on logic, performance, code quality and nextjs best practices.
 - Provide comments and suggestions ONLY if there is something to improve, otherwise "reviews" should be an empty array.
 - Write the comment in GitHub Markdown format.
 - Use the given description only for the overall context and only comment the code.