Steps: 
1. Go to Home Page
2. Scroll Down
3. Click Donate Button
4. Go to Private Donations
5. Select Pay One Time
6. Fill out the First Name, Last Name
7. Observe the First Name and Last Name

Actual:	Verify the First Name, Last Name 	

Expected: First Name and Last Name should only entering alphabets value	

Screenshot: https://screencast-o-matic.com/watch/c3fheBVqxVj