It's not in frame and throwing an error while enter credit card number. Please note it's an angular-based website.
driver.findElement(
By.xpath("//input[@id='credit-card-number']")
).sendKeys("4111111111111111");
Error in console
FAILED: orderplace
org.openqa.selenium.NoSuchElementException: no such element: Unable to locate element: {"method":"xpath","selector":"//input[@id='credit-card-number']"}
(Session info: chrome=84.0.4147.89)