selenium code for facebook login using cssSelector

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class FbLogin
{

public static void main(String[] args)
{
WebDriver driver=new FirefoxDriver();
driver.get("https://www.facebook.com/");

driver.findElement(By.cssSelector("input[id=\"email\"]")).sendKeys("krish@gmail.com");
driver.findElement(By.cssSelector("input[id=\"pass\"]")).sendKeys("123456789");
driver.findElement(By.cssSelector("input[id=\"u_0_q\"]")).click();



}

}