minor adjustment to media player fixing its width in desktop view

src/app/navbar/navbar.component.scss

@@ -25,7 +25,7 @@
   @media (min-width: $bp-md) {
     display: grid;
     align-items: center;
-    grid-template-columns: auto 1fr auto;
+    grid-template-columns: auto 320px auto;
     grid-template-areas: 'brand player menu';
     gap: $spacing-lg;