Resolve "fix: add title on features"

Closes #36 (closed)

src/components/HomepageFeatures.js

 import React from "react";
 import clsx from "clsx";
 import styles from "./HomepageFeatures.module.css";
-
+{/* <section className="sections">
+      <div id="features">
+        {FeatureList.map((props, idx) => (
+          <Feature key={idx} {...props} />
+        ))}
+      </div>
+    </section> */}
 const FeatureList = [
   {
     title: "1. Le Lab 🧪",   
@@ -57,12 +63,15 @@ function Feature({Svg, title, description}) {
 }
 
 export default function HomepageFeatures() {
-  return (
-    <section className="sections">
-      <div id="features">
-        {FeatureList.map((props, idx) => (
-          <Feature key={idx} {...props} />
-        ))}
+  return ( 
+    <section className={"sections"}>
+      <div className={styles.barre}>
+        <div className="text--center">
+          <h2 id="features" className="text--center text--uppercase">Fonctionnalités</h2>
+          {FeatureList.map((props, idx) => (
+            <Feature key={idx} {...props} />
+          ))}
+        </div>
       </div>
     </section>
   );