android webview size fix

docs/.vitepress/theme/custom.css

@@ -1,3 +1,10 @@
+body {
+  padding-top: env(safe-area-inset-top);
+  padding-bottom: env(safe-area-inset-bottom);
+  padding-left: env(safe-area-inset-left);
+  padding-right: env(safe-area-inset-right);
+}
+
 .pinyin {
   font-style: italic;
   opacity: 0.15;