Resolve "improve code readability"

Closes #72 (closed)

src/components/Carousel/CarouselLibre.js

@@ -57,7 +57,7 @@ const CarouselList = [
 
 export default function CarouselLibre() {
   return (
-    <div className="homepage_section">
+    <div className="homepage-section">
       <section className="sections container">
         <h2 className={clsx("text--center")}>Restez libres !
         </h2>