If you're using Visual Studio code, here's a tip to quickly generate a a basic HTML Template. Note: Your document type will have to be set to HTML. In an .html document, type html:5 and press tab. 
Below is the raw output, in case you are not using Visual Studio Code, or are not able to get the above tip to work.
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> </body> </html>