Automating color sense 2 test on http://zzzscore.com/color2/en/ using webdriver and c#

Color Sense Test 2

IWebDriver driver = new FirefoxDriver();
driver.Navigate().GoToUrl("http://zzzscore.com/color2/en/");

var sixtySecondsFromNow = DateTime.Now.AddSeconds(60);
while (DateTime.Now <= sixtySecondsFromNow)
{
    driver.FindElement(By.CssSelector(".main")).Click();
}
Console.WriteLine($"Score: {driver.FindElement(By.Id("score"))}");
driver.Quit();