So, I'm stuck at Lesson 1, Exercise 3 and when I try typing the "<" part, it gets highlighted in red and when I scroll over it to see what the problem is, I see a message saying, "Special Characters must be escaped: [<]." What is a special character, and what does it mean to be escaped? I'm so lost. Any help is greatly appreciated.
<!DOCTYPE html> <html> <head> <title>Ollie Bike Sharing</title> <meta charset="utf-8"/> <link rel="stylesheet" type="text/css" href="main.css"> </head> <body> < </body> </html>