diff --git a/src/main/webapp/WEB-INF/jsp/framework/layouts/tiles/biz/layout-tiles-biz-main.jsp b/src/main/webapp/WEB-INF/jsp/framework/layouts/tiles/biz/layout-tiles-biz-main.jsp
index a9ec7e72..71143f1c 100644
--- a/src/main/webapp/WEB-INF/jsp/framework/layouts/tiles/biz/layout-tiles-biz-main.jsp
+++ b/src/main/webapp/WEB-INF/jsp/framework/layouts/tiles/biz/layout-tiles-biz-main.jsp
@@ -16,6 +16,8 @@
             background-size: 15px 15px;
             width: 15px;
             height: 15px;
+            margin-right: 5px;
+            margin-top: 5px;
             cursor: hand;
             background-position: right;
             background-repeat: no-repeat;
diff --git a/src/main/webapp/resources/biz/common/js/jqueryTabs.js b/src/main/webapp/resources/biz/common/js/jqueryTabs.js
index f161bf51..67cdbad8 100644
--- a/src/main/webapp/resources/biz/common/js/jqueryTabs.js
+++ b/src/main/webapp/resources/biz/common/js/jqueryTabs.js
@@ -26,7 +26,13 @@ function openMenu(menuId, menuNm, menuUrl) {
     }
 
     const num_tabs = OPEN_TAB_CNT + 1;
-    const liEl = '<li id="li-'+ menuId +'" class="tab"><a href="#tab-'+ menuId + '">' + menuNm + '</a><span class="biz-tab-close" onclick="closeTab('+ menuId + ')"></span></li>';
+
+    let liEl = '<li id="li-'+ menuId +'" class="tab"><a href="#tab-'+ menuId + '">' + menuNm + '</a>';
+    if(menuId != "main"){
+        liEl += '<button class="biz-tab-close" onclick="closeTab('+ menuId + ')"></button>'
+    }
+    liEl += '</li>';
+
     $('div#ifrTabs ul').append(liEl);
 
     $('div#ifrTabs').append(