CSS Properties In Selenium WebDriver

import org.testng.annotations.Test;
import org.testng.annotations.BeforeTest;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.AfterTest;
public class BackgroundColor {
    public WebDriver driver;
  @Test
  public void GetCssValues() {
   
      driver.get("http://seleniumsubbu.blogspot.in/");
     
      String bgcolor = driver.findElement(By.id("header")).getCssValue("background-color");
      System.out.println("HeaderBackground-color:"+bgcolor);
   
      String textColor = driver.findElement(By.id("site-name")).getCssValue("color");
      System.out.println("SiteNameText-color:"+textColor);
   
      String fontsize = driver.findElement(By.id("site-name")).getCssValue("font-size");
      System.out.println("SiteNameFont-size:"+fontsize);
   
  }
  @BeforeTest
  public void beforeTest() {
      driver=new FirefoxDriver();
  }
  @AfterTest
  public void afterTest() {
  }
}