minor ui fixes

lib/presentation/widgets/currently_playing_bar.dart

@@ -31,6 +31,8 @@ class CurrentlyPlayingBar extends StatelessWidget {
               ),
               GestureDetector(
                 onTap: () => _onTap(context),
+                child: Container(
+                  color: Colors.transparent,
                   child: Row(
                     children: <Widget>[
                       Image(
@@ -61,6 +63,7 @@ class CurrentlyPlayingBar extends StatelessWidget {
                     ],
                   ),
                 ),
+              ),
             ],
           );
         }

lib/presentation/widgets/next_indicator.dart

@@ -21,6 +21,8 @@ class NextIndicator extends StatelessWidget {
 
         return GestureDetector(
           onTap: () => onTapAction(context),
+          child: Container(
+            color: Colors.transparent,
             child: Padding(
               padding: const EdgeInsets.only(top: 4.0, bottom: 8.0),
               child: Center(
@@ -40,6 +42,7 @@ class NextIndicator extends StatelessWidget {
                 ),
               ),
             ),
+          ),
         );
       },
     );