update visualizer sizing and z-index

src/renderer/features/player/components/visualizer.module.css

@@ -1,5 +1,7 @@
 .container {
-    max-width: 100%;
+    z-index: 50;
+    width: 100%;
+    height: 100%;
     margin: auto;
 
     canvas {

src/renderer/features/player/components/visualizer.tsx

@@ -61,7 +61,6 @@ export const Visualizer = () => {
         <div
             className={styles.container}
             ref={canvasRef}
-            style={{ height: length, width: length }}
         />
     );
 };