Index: arms/js/jiraConnection.js
===================================================================
diff -u -rdb4e80ffade37a2ccf89edafe6af617610ef6fde -rd638a48e9daec31b1367e09aba7a2b00e76279ff
--- arms/js/jiraConnection.js	(.../jiraConnection.js)	(revision db4e80ffade37a2ccf89edafe6af617610ef6fde)
+++ arms/js/jiraConnection.js	(.../jiraConnection.js)	(revision d638a48e9daec31b1367e09aba7a2b00e76279ff)
@@ -171,7 +171,7 @@
 
             data +=
             `
-            <div class="card mb-2 ribbon-box ribbon-fill right" onclick="jiraServerCardClick(${cardList[i].c_id})">
+            <div class="card mb-2 ribbon-box ribbon-fill right" id="card-${cardList[i].c_id}" onclick="jiraServerCardClick(${cardList[i].c_id})">
                 <!-- 리본표시 -->                           
                 <div class="ribbon-${i}">${drawRibbon(cardList[i].c_id,cardList[i].c_jira_server_type, i)}</div>                                
                 <!--카드내용1-->
@@ -234,6 +234,9 @@
         dataType: "json", // 서버에서 보내줄 데이터의 타입
         beforeSend: function () {
             $(".loader").removeClass("hide");
+            let cardId = "#card-"+c_id;
+            $(".card").removeClass("clicked");
+            $(cardId).addClass("clicked");
         }
     })
         // HTTP 요청이 성공하면 요청한 데이터가 done() 메소드로 전달됨.
Index: reference/jquery-plugins/select2-4.0.2/dist/css/jira_server_connection.css
===================================================================
diff -u -r8c6096a05fdd5996fd6d966988510d71fc37cdd2 -rd638a48e9daec31b1367e09aba7a2b00e76279ff
--- reference/jquery-plugins/select2-4.0.2/dist/css/jira_server_connection.css	(.../jira_server_connection.css)	(revision 8c6096a05fdd5996fd6d966988510d71fc37cdd2)
+++ reference/jquery-plugins/select2-4.0.2/dist/css/jira_server_connection.css	(.../jira_server_connection.css)	(revision d638a48e9daec31b1367e09aba7a2b00e76279ff)
@@ -225,6 +225,9 @@
     /* border-right: 1px solid;*/
     border-color: #e5603b;
 }
+.card.clicked {
+    background-color: rgba(50, 50, 50, 0.65);
+}
 .card-body {
     background: rgba(51,51,51,.3);
     padding: 1rem;