adding margin to api sidenav items

Author: Kayla Wilkins

src/css/components/4_pages/api-page.css

@@ -78,6 +78,10 @@
   @apply text-BaseBlackFull no-underline;
 }
 
+.list-container {
+  margin-bottom: 12px;
+}
+
 .response-200 {
   border-left-width: 5px;
   @apply border-BaseGreen;
@@ -115,6 +119,10 @@
     top: 64px;
   }
 
+  .list-container {
+    margin-bottom: 0;
+  }
+
   .api-navigation-wrapper {
     margin-right: 1rem;
     width: 300px;