How to style the display of HTML elements in Selenium tests?

executor.executeScript
("document.getElementById('gsc-i-id1').style.display='block';");

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.JavascriptExecutor;
public class ElementStyleSet{
   public static void main(String[] args) {
      System.setProperty("webdriver.chrome.driver", "C:\Users\ghs6kor\Desktop\Java\chromedriver.exe");
      WebDriver driver = new ChromeDriver();
      driver.get("https://www.tutorialspoint.com/index.htm");
      driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
      // Javascript executor class with executeScript method
      JavascriptExecutor j = (JavascriptExecutor) driver;
      // set the display with style.display method
      j.executeScript ("document.getElementById('gsc-i-id1').style.display='block';");
      driver.close()
   }
}