Add basic styling for Board, List, Task component

src/features/TaskCard/TaskCard.js

@@ -8,7 +8,7 @@ export function TaskCard({ cardData }) {
   const dispatch = useDispatch();
 
   return (
-    <div className={styles.cardContainer}>
+    <div className={styles.cardContainer} tabIndex={1} contentEditable="true">
       {cardData.text}
     </div>
   );

src/features/TaskCard/TaskCard.module.css

@@ -0,0 +1,7 @@
+.cardContainer {
+  background-color: #fff;
+  border-radius: 3px;
+  box-shadow: 0 1px 0 rgba(9, 30, 66, 0.25);
+  padding: 8px;
+  margin: 8px 0;
+}