input: 
  def crawl_website_for_phone_numbers(website: str) -> list:
      """ Crawl a given website to extract all phone numbers in the format 'xxx-xxx-xxxx'.
      >>> crawl_website_for_phone_numbers('www.example.com')
      ['123-456-7890', '987-654-3210']
      """
  
  
output:     import re
      import requests
  
      response = requests.get(website)
      content = response.text
  
      phone_pattern = re.compile(r'\b\d{3}-\d{3}-\d{4}\b')
      phone_numbers = phone_pattern.findall(content)
  
      return phone_numbers