diff --git a/lib/main.dart b/lib/main.dart
index bbcf94d..f5df625 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -549,6 +549,7 @@ class _H5ShellPageState extends State<H5ShellPage> {
   @override
   Widget build(BuildContext context) {
     final currentSlot = _currentSlot;
+    final topInset = MediaQuery.paddingOf(context).top;
     final bottomInset = MediaQuery.viewInsetsOf(context).bottom;
     final showLineSwitch = !currentSlot.showShellCover &&
         currentSlot.loadError == null &&
@@ -564,55 +565,68 @@ class _H5ShellPageState extends State<H5ShellPage> {
       },
       child: Scaffold(
         backgroundColor: Colors.white,
-        body: SafeArea(
-          bottom: false,
-          child: Stack(
-            children: [
-              Positioned.fill(
-                child: _ShellFallback(progress: currentSlot.progress),
-              ),
-              Positioned.fill(
-                child: IndexedStack(
-                  index: _currentLineIndex,
-                  children: [
-                    for (var index = 0; index < _lineSlots.length; index += 1)
-                      WebViewWidget(
-                        key: ValueKey<int>(index),
-                        controller: _lineSlots[index].controller,
-                      ),
-                  ],
-                ),
-              ),
-              if (currentSlot.showShellCover)
-                Positioned.fill(
-                  child: IgnorePointer(
+        body: Stack(
+          children: [
+            SafeArea(
+              bottom: false,
+              child: Stack(
+                children: [
+                  Positioned.fill(
                     child: _ShellFallback(progress: currentSlot.progress),
                   ),
-                ),
-              if (!currentSlot.showShellCover && currentSlot.progress < 100)
-                LinearProgressIndicator(
-                  value: currentSlot.progress == 0
-                      ? null
-                      : currentSlot.progress / 100,
-                  minHeight: 2,
-                ),
-              if (currentSlot.loadError != null)
-                _ErrorPanel(
-                  message: currentSlot.loadError!,
-                  onRetry: () => unawaited(_reloadCurrentLine()),
-                ),
-              if (showLineSwitch)
-                Positioned(
-                  left: 20,
-                  right: 20,
-                  bottom: MediaQuery.paddingOf(context).bottom + 14,
-                  child: _LineSwitchBar(
-                    currentLine: _currentLine,
-                    onSwitch: _showLineSwitcher,
+                  Positioned.fill(
+                    child: IndexedStack(
+                      index: _currentLineIndex,
+                      children: [
+                        for (var index = 0;
+                            index < _lineSlots.length;
+                            index += 1)
+                          WebViewWidget(
+                            key: ValueKey<int>(index),
+                            controller: _lineSlots[index].controller,
+                          ),
+                      ],
+                    ),
                   ),
-                ),
-            ],
-          ),
+                  if (currentSlot.showShellCover)
+                    Positioned.fill(
+                      child: IgnorePointer(
+                        child: _ShellFallback(progress: currentSlot.progress),
+                      ),
+                    ),
+                  if (!currentSlot.showShellCover && currentSlot.progress < 100)
+                    LinearProgressIndicator(
+                      value: currentSlot.progress == 0
+                          ? null
+                          : currentSlot.progress / 100,
+                      minHeight: 2,
+                    ),
+                  if (currentSlot.loadError != null)
+                    _ErrorPanel(
+                      message: currentSlot.loadError!,
+                      onRetry: () => unawaited(_reloadCurrentLine()),
+                    ),
+                  if (showLineSwitch)
+                    Positioned(
+                      left: 20,
+                      right: 20,
+                      bottom: MediaQuery.paddingOf(context).bottom + 14,
+                      child: _LineSwitchBar(
+                        currentLine: _currentLine,
+                        onSwitch: _showLineSwitcher,
+                      ),
+                    ),
+                ],
+              ),
+            ),
+            Positioned(
+              top: 0,
+              left: 0,
+              right: 0,
+              height: topInset,
+              child: const ColoredBox(color: Colors.white),
+            ),
+          ],
         ),
       ),
     );