.sidebar {
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  width: 100px;
  background-color: #343a40;
}
.sidebar a {
  color: #ddd;
  text-decoration: none;
  padding: 6px 5px;
  display: block;
  border-bottom: 1px solid #444;
}
.sidebar a:hover {
  background-color: #575757;
  color: white;
}
.main-content {
  margin-left: 100px;
  padding: 20px;
}
.sticky-header th {
    position: sticky;
    top: 0;
    background-color: #fff;
    z-index: 1;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
.table-responsive {
    max-height: 500px;
    overflow-y: auto;
}