There are a few issues with your current solution, and I highly suggest you’d reconsider the text of the challenge.
Add a pair of radio buttons to your form, each nested in its own label element. One should have the option of indoor and the other should have the option of outdoor . Both should share the name attribute of indoor-outdoor to create a radio group.
Here a few suggestions to guide you.
consider where your radio buttons are placed.
<main>
<form>
</form>
</main>
<!-- your current radio buttons -->
<input >
Are you adding the radio buttons to the form?
compare your markup with the example for the radio button introduced with the challenge
<label>
<input>
</label>
Which relation is there between the <label> and <input> elements?
It might help you to break down the markup on multiple lines.