It is defined by an opening tag, content and a closing tag. There are many different types of HTML elements, but this is a heading (h1) element, which will by default appear in a larger font-size than other elements.
Note the syntax for creating an HTML element:
An opening tag, which has the element name enclosed within angle brackets (<h1>).
The content of the element, which is what the user will see on screen (e.g. ‘Hello World’).
A closing tag, which has the element name enclosed within angle brackets and includes a forward slash (</h1>).
For this first step, all you need to do is change the text content of the h1 element, to the specified text. Do not modify the opening or closing tags. I would hit the Reset button and then simply do that and you should pass the step.