style(SW-634): add logic to avoid double borders

components/Blocks/ShortcutsList/index.tsx

@@ -18,7 +18,8 @@ export default function ShortcutsList({
   const leftColumn = shortcuts.slice(0, middleIndex)
   const rightColumn = shortcuts.slice(middleIndex)
 
-  const classNames = hasTwoColumns
+  const classNames =
+    hasTwoColumns && shortcuts.length > 1
       ? {
           section: styles.twoColumnSection,
           leftColumn: styles.leftColumn,
@@ -26,8 +27,10 @@ export default function ShortcutsList({
         }
       : {
           section: styles.oneColumnSection,
-        leftColumn: styles.leftColumnBottomBorder,
-        rightColumn: "",
+          leftColumn:
+            shortcuts.length === 1
+              ? styles.leftColumnBorderBottomNone
+              : styles.leftColumnBorderBottom,
         }
 
   return (

components/Blocks/ShortcutsList/shortcutsList.module.css

@@ -7,10 +7,14 @@
 }
 
 .leftColumn,
-.leftColumnBottomBorder {
+.leftColumnBorderBottom {
   border-bottom: 1px solid var(--Base-Border-Subtle);
 }
 
+.leftColumnBorderBottomNone {
+  border-bottom: none;
+}
+
 @media screen and (min-width: 1367px) {
   .twoColumnSection {
     grid-template-columns: 1fr 1fr;