Do not allow closed tasks to move on the board

assets/css/app.css

@@ -880,7 +880,12 @@ nav .active a {
 }
 
 div.task-board-recent {
-    border: 1px solid #666;
+    box-shadow: 2px 2px 5px rgba(0,0,0,0.25);
+}
+
+div.task-board-status-closed {
+    user-select: none;
+    border: 1px dotted #555;
 }
 
 .task-table a,
@@ -1003,6 +1008,7 @@ span.task-board-date-overdue {
 }
 
 /* task age */
+.task-board-closed,
 .task-board-days {
     position: absolute;
     right: 5px;
@@ -1089,7 +1095,7 @@ span.task-board-date-overdue {
     padding-left: 20px;
 }
 
-.description-textarea {
+.task-show-description-textarea {
     width: 99%;
     max-width: 99%;
     height: 300px;
@@ -1154,27 +1160,7 @@ span.task-board-date-overdue {
 .task-show-file-table {
     width: auto;
 }
-
-/* screenshots */
-#screenshot-zone {
-    position: relative;
-    border: 2px dashed #ccc;
-    width: 90%;
-    height: 250px;
-    overflow: auto;
-}
-
-#screenshot-inner {
-    position: absolute;
-    left: 0;
-    bottom: 48%;
-    width: 100%;
-    text-align: center;
-}
-
-#screenshot-zone.screenshot-pasted {
-    border: 2px solid #333;
-}/* comments */
+/* comments */
 .comment {
     margin-bottom: 20px;
 }
@@ -1592,12 +1578,8 @@ span.task-board-date-overdue {
     padding: 6px 0;
     background-color: #fff;
     border: 1px solid #b2b2b2;
-    -webkit-border-radius: 3px;
-       -moz-border-radius: 3px;
-            border-radius: 3px;
-    -webkit-box-shadow: 0px 1px 3px rgba(0,0,0,0.15);
-       -moz-box-shadow: 0px 1px 3px rgba(0,0,0,0.15);
-            box-shadow: 0px 1px 3px rgba(0,0,0,0.15);
+    border-radius: 3px;
+    box-shadow: 0px 1px 3px rgba(0,0,0,0.15);
 }
 
 .dropdown ul li {
@@ -1641,3 +1623,22 @@ td li.dropit-trigger {
 .task-board .dropit-submenu a:hover {
     text-decoration: none;
 }
+#screenshot-zone {
+    position: relative;
+    border: 2px dashed #ccc;
+    width: 90%;
+    height: 250px;
+    overflow: auto;
+}
+
+#screenshot-inner {
+    position: absolute;
+    left: 0;
+    bottom: 48%;
+    width: 100%;
+    text-align: center;
+}
+
+#screenshot-zone.screenshot-pasted {
+    border: 2px solid #333;
+}