Fix mdBook rendering issues with nested sections

custom.css

@@ -0,0 +1,87 @@
+/* Custom styling for IT Learning Notes */
+
+/* Ensure all sections are properly visible */
+.section {
+    display: block !important;
+    visibility: visible !important;
+    opacity: 1 !important;
+}
+
+/* Improve nested section visibility */
+.chapter li.chapter-item {
+    margin-left: 1em;
+}
+
+.chapter li.chapter-item.expanded {
+    margin-left: 0;
+}
+
+/* Better styling for scenario headers */
+h2 {
+    margin-top: 2em;
+    border-bottom: 1px solid #ddd;
+    padding-bottom: 0.3em;
+}
+
+/* Make anchors more reliable */
+h2:before, h3:before {
+    content: "";
+    display: block;
+    height: 70px;
+    margin-top: -70px;
+    visibility: hidden;
+}
+
+/* Styling for code blocks */
+pre {
+    background-color: #f5f5f5;
+    border-radius: 4px;
+    padding: 1em;
+    overflow-x: auto;
+}
+
+/* Improve table styling */
+table {
+    width: 100%;
+    border-collapse: collapse;
+    margin: 20px 0;
+}
+
+table, th, td {
+    border: 1px solid #ddd;
+}
+
+th, td {
+    padding: 12px;
+    text-align: left;
+}
+
+th {
+    background-color: #f5f5f5;
+}
+
+/* Style for tags */
+.tag {
+    background-color: #f0f0f0;
+    border-radius: 4px;
+    padding: 3px 6px;
+    font-size: 0.85em;
+    font-family: monospace;
+}
+
+/* Ensure content is visible */
+.content {
+    display: block !important;
+}
+
+/* Fix for potentially hidden elements */
+.hidden {
+    display: block !important;
+    visibility: visible !important;
+}
+
+/* Ensure chapters don't disappear */
+.chapter {
+    display: block !important;
+    visibility: visible !important;
+}