Improve accordion styles

_sass/_custom_classes.scss

@@ -173,3 +173,25 @@ section#search-section {
         border-radius: $border-radius;
     }
 }
+
+/*-----Accordion styles-----*/
+
+// Add a bottom border to the last accordion.
+a.info-collapse[aria-expanded="false"]:last-of-type, 
+a.info-collapse[aria-expanded="true"]:last-of-type + .show {
+    border-bottom: 1px solid var(--bs-border-color);
+}
+
+// Remove border hover effect.
+.info-collapse:hover, .info-collapse[aria-expanded="true"] {
+    border-color: var(--bs-border-color) !important;
+}
+
+// Add hover effect to accordion header text.
+a.info-collapse h3 {
+    transition: color .2s ease-in-out;
+}
+
+a.info-collapse:hover h3 {
+    color: rgba(var(--bs-link-color-rgb), .8) !important;
+}