sticky outline

frontend/src/app/ntt-gantt/ntt-gantt.component.css

@@ -215,6 +215,7 @@
   background-color: rgb(240, 240, 240);
 }
 
+/* Ensure filterContainer sticks to the top when scrolling */
 .filterContainer {
   display: flex;
   flex-direction: row;
@@ -227,6 +228,15 @@
   padding-left: 10px;
   padding-right: 15px;
   justify-content: space-between;
+  position: -webkit-sticky; /* For Safari */
+  position: sticky;
+  top: 0;
+  z-index: 1000; /* Ensure it is above other content */
+  border-bottom: 0.5px solid rgba(0, 0, 0, 0.1);
+}
+
+.filterContainer.sticky {
+  border-radius: 0;
 }
 
 .left, .right {