<the literal < (6010 / 748 / 3C16)
\!the literal ! (3310 / 418 / 2116)
DOCTYPE html>the literal text DOCTYPE html> (case sensitive) \s*any whitespace character, repeated any number of times
<htmlthe literal text <html (case sensitive) Negated Character Class[^>]* *matches any number of characters outside the set below:
>the literal > (6210 / 768 / 3E16)
>the literal > (6210 / 768 / 3E16)
\s*any whitespace character, repeated any number of times
<head>the literal text <head> (case sensitive) *?matches any number of characters from the set below:
\sany whitespace character
\Sany non-whitespace character
<the literal < (6010 / 748 / 3C16)
\/the literal / (4710 / 578 / 2F16)
head>the literal text head> (case sensitive) \s*any whitespace character, repeated any number of times
<body>the literal text <body> (case sensitive) *?matches any number of characters from the set below:
\sany whitespace character
\Sany non-whitespace character
<the literal < (6010 / 748 / 3C16)
\/the literal / (4710 / 578 / 2F16)
body>the literal text body> (case sensitive) \s*any whitespace character, repeated any number of times
<the literal < (6010 / 748 / 3C16)
\/the literal / (4710 / 578 / 2F16)
html>the literal text html> (case sensitive)