Container( height: 36, child: TextField( maxLines: 1, style: TextStyle(fontSize: 17), textAlignVertical: TextAlignVertical.center, decoration: InputDecoration( filled: true, prefixIcon: Icon(Icons.search, color: Theme.of(context).iconTheme.color), border: OutlineInputBorder( borderSide: BorderSide.none, borderRadius: BorderRadius.all(Radius.circular(30))), fillColor: Theme.of(context).inputDecorationTheme.fillColor, contentPadding: EdgeInsets.zero, hintText: 'Search', ), ), )