updated help and advanced table

hub/services/static/css/roi-calculator.css

@@ -495,4 +495,80 @@
     .table th, .table td {
         padding: 0.5rem 0.25rem;
     }
+}
+
+/* Monthly Breakdown Filter Controls */
+.breakdown-filters {
+    background: #f8f9fa;
+    border-radius: 6px;
+    padding: 1rem;
+    margin-bottom: 1rem;
+}
+
+.breakdown-filters .form-check {
+    margin-bottom: 0.25rem;
+}
+
+.breakdown-filters .form-check-input:checked {
+    background-color: #0d6efd;
+    border-color: #0d6efd;
+}
+
+.breakdown-filters .form-check-label {
+    cursor: pointer;
+    user-select: none;
+    font-size: 0.875rem;
+}
+
+/* Responsive breakdown filters */
+@media (max-width: 768px) {
+    .breakdown-filters {
+        padding: 0.75rem;
+    }
+    
+    .breakdown-filters .d-flex {
+        flex-direction: column;
+        gap: 0.5rem !important;
+    }
+}
+
+/* Enhanced sticky header for monthly breakdown table */
+.table-responsive {
+    position: relative;
+}
+
+.table-responsive .sticky-top {
+    position: sticky;
+    top: 0;
+    z-index: 10;
+    background-color: #212529 !important; /* Ensure dark background stays */
+}
+
+.table-responsive .sticky-top th {
+    background-color: #212529 !important;
+    border-color: #454d55 !important;
+    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+}
+
+/* Ensure sticky header works in scrollable containers */
+.table-responsive[style*="max-height"] .sticky-top {
+    position: sticky;
+    top: 0;
+    z-index: 20;
+}
+
+/* Additional styling for better visibility */
+.table-dark th {
+    font-weight: 600;
+    font-size: 0.875rem;
+    white-space: nowrap;
+    text-align: center;
+}
+
+.table-dark th:first-child {
+    text-align: center;
+}
+
+.table-dark th:nth-child(n+4) {
+    text-align: right;
 }