Resolve "Add badground color on sections in index"

Closes #103 (closed)

src/components/CarouselLibre.js

@@ -47,7 +47,7 @@ const CarouselList = [
 
 export default function CarouselLibre() {
   return (
-    <div>
+    <div className="homepage_section">
       <section className="sections container">
         <h2 className={clsx("text--center")}>Restez libres !
         </h2>