feat: finalize lease documents and IRL revisions

frontend/src/app/components/apartment-form/apartment-form.css

@@ -2,10 +2,28 @@
   display: block;
 }
 .form-actions {
-  margin-top: 6px;
+  margin-top: 28px;
+}
+.form-section + .form-section {
+  margin-top: 30px;
+  padding-top: 28px;
+  border-top: 1px solid var(--border);
+}
+.section-heading {
+  margin-bottom: 20px;
+}
+.section-heading h2 {
+  margin: 0 0 4px;
+  font-size: 1rem;
+}
+.section-heading p {
+  margin: 0;
+  color: var(--text-muted);
+  font-size: 0.8rem;
+  line-height: 1.6;
 }
 @media (min-width: 1180px) {
   .form-page {
-    max-width: 900px;
+    max-width: 980px;
   }
 }