1.The <!DOCTYPE> declaration represents the document type which helps browsers to display web pages correctly.
2.It must only appear once, at the top of the page (before any HTML tags).
3.The <!DOCTYPE> declaration is not case sensitive.
4.The <!DOCTYPE> declaration for HTML is:
2.It must only appear once, at the top of the page (before any HTML tags).
3.The <!DOCTYPE> declaration is not case sensitive.
4.The <!DOCTYPE> declaration for HTML is:
<!DOCTYPE html>
