A quick SpecFlow / Selenium / ChromeDriver example to answer a question on the mailing list.

UserLogins.feature

# Modify to suit your needs
Feature: Logins
	As a user
	I want to be able to login
	So that I can see my customized profile information 

Scenario Outline: Logging in a registered user
	Given I am on the home page
	When I enter the username <username>
	And I enter the password <password>
	And I click login
	Then I should be authenticated
	
Examples:
| username | password |
| user1 | password1 |
| user2 | password2 |

UserLoginSteps.cs

using System;
using NUnit.Framework;
using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;
using OpenQA.Selenium.Interactions;
using TechTalk.SpecFlow;

namespace _20201208SpecFlowDemo
{
    [Binding]
    public sealed class UserLoginSteps : IDisposable
    {
        private readonly IWebDriver _driver;
        private const string HOME_PAGE_URL = "https://seankilleen.com";
        private readonly Uri _homePageUri;

        private readonly ScenarioContext _scenarioContext;

        public UserLoginSteps(ScenarioContext scenarioContext)
        {
            _scenarioContext = scenarioContext;
            _homePageUri = new Uri(HOME_PAGE_URL);
            _driver = new ChromeDriver(); // TODO: Add specific driver location if not in bin folder.
        }

        [Given(@"I am on the home page")]
        public void GivenIAmOnTheHomePage()
        {
            _driver.Navigate().GoToUrl(_homePageUri);
        }

        [When(@"I enter the username (.*)")]
        public void WhenIEnterTheUsernameUser(string username)
        {
            UsernameField().SendKeys(username);
        }

        [When(@"I enter the password (.*)")]
        public void WhenIEnterThePasswordPassword(string password)
        {
            PasswordField().SendKeys(password);
        }

        [When(@"I click login")]
        public void WhenIClickLogin()
        {
            LoginButton().Click();
        }

        [Then(@"I should be authenticated")]
        public void ThenIShouldBeAuthenticated()
        {
            var manageProfileImage = ManageProfileImage();

            Assert.That(manageProfileImage, Is.Not.Null); // TODO: Replace with your own test
        }

        [AfterScenario]
        public void AfterScenario()
        {
            LogoutOfSite();
        }

        private void LogoutOfSite()
        {
            MoveOverManageProfileImage();
            ManageProfileImage().Click();
            ProfileLogoutButton().Click();
        }

        private IWebElement ProfileLogoutButton()
        {
            return _driver.FindElement(By.XPath("/html/body/div/main/nav/div/div[2]/ul/li[4]/div/a[3]"));
        }

        private void MoveOverManageProfileImage()
        {
            var clickNavbarProfileImage = new Actions(_driver);
            clickNavbarProfileImage.MoveToElement(ManageProfileImage());
            clickNavbarProfileImage.Build().Perform();
        }

        public void Dispose()
        {
            _driver?.Dispose();
        }

        private IWebElement ManageProfileImage()
        {
            return _driver.FindElement(By.XPath("//*[@id='navbarDropdownProfile']/img"));
        }

        private IWebElement LoginButton()
        {
            return _driver.FindElement(By.CssSelector("#account > div:nth-child(7) > div > button"));
        }

        private IWebElement PasswordField()
        {
            return _driver.FindElement(By.Id("Input_Password"));
        }

        private IWebElement UsernameField()
        {
            return _driver.FindElement(By.Id("Input_Email"));
        }
    }
}