feat: 코드 css 추가

Author: eottabom

posts/spring/jpa-determine-entity-is-new.mdx

@@ -184,7 +184,6 @@ ID 를 직접 설정했을 경우는 Persistable + isNew() 로 명시하는 것
 
 ### 📚 Reference
 
-
 * [Spring Docs - JpaEntityInformation](https://docs.spring.io/spring-data/jpa/docs/current/api/org/springframework/data/jpa/repository/support/JpaEntityInformation.html)
 * [Spring Docs - entity-persistence](https://docs.spring.io/spring-data/jpa/reference/jpa/entity-persistence.html)
 

styles/globals.css

@@ -70,3 +70,16 @@ body {
   }
 }
 
+code {
+  background-color: #fffde7;
+  font-weight: 750;
+  font-family: 'Pretendard', 'Noto Sans KR', 'Apple SD Gothic Neo', sans-serif;
+  color: #1f2937;
+  padding: 0.2em 0.4em;
+  border-radius: 4px;
+}
+
+.prose code::before,
+.prose code::after {
+  content: none;
+}