added scroll for overview in movies app & centered cards

movie-app/style.css

@@ -44,6 +44,7 @@ header {
 main {
   display: flex;
   flex-wrap: wrap;
+  justify-content: center;
 }
 
 .movie {
@@ -101,6 +102,7 @@ main {
   right: 0;
   max-height: 100%;
   transform: translateY(101%);
+  overflow-y: auto;
   transition: transform 0.3s ease-in;
 }