diff --git a/pom.xml b/pom.xml
index 3602f56..7d95eea 100644
--- a/pom.xml
+++ b/pom.xml
@@ -8,6 +8,17 @@
 	<description>Web resources for xit projects</description>
 	<packaging>jar</packaging>
 
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		
+		<java.version>17</java.version>
+		<maven.compiler.source>${java.version}</maven.compiler.source>
+		<maven.compiler.target>${java.version}</maven.compiler.target>
+		
+		<spring.maven.artifact.version>5.3.20</spring.maven.artifact.version>
+		<org.egovframe.rte.version>4.1.0</org.egovframe.rte.version>
+	</properties>
+
 	<repositories>
 		<repository>
 			<id>maven-public</id>
diff --git a/src/main/webapp/resources/css/styles.css b/src/main/webapp/resources/css/styles.css
index 0b272c7..7ec201f 100644
--- a/src/main/webapp/resources/css/styles.css
+++ b/src/main/webapp/resources/css/styles.css
@@ -2,8 +2,6 @@
 
 *[onclick], *[href] {cursor:pointer;}
 
-.hidden {display: none;}
-
 .wait {
 	position:fixed; top:25%; left:50%;
 	filter:alpha(opacity=50); -moz-opacity:0.5; opacity:0.5;
@@ -145,6 +143,4 @@ ul.nav-tabs > li.nav-item {
 	width: auto;
 }
 
-.not-used {
-	color: lightgrey;
-}
\ No newline at end of file
+.not-used, tr.not-used td {color: lightgrey;}
\ No newline at end of file