      </script>
                    </div>
                    
                    <div class="form-group form-group-checkbox">
                        <label for="reportGain">Report Gain</label>
                        <input type="checkbox" id="reportGain" class="styled-checkbox">
                    </div>
    
                    <button type="submit" class="nav-button">Add Expense</button>
                </form>
                <div id="formMessage" class="form-message"></div>
            </div>
    