Notice that both radio buttons can be selected at the same time. To make it so selecting one radio button automatically deselects the other, both buttons must have a `name` attribute with the same value.
Both radio buttons should have a `name` attribute. Check that there is a space after the opening tag's name and/or there are spaces before all attribute names.
Both radio buttons should have a `name` attribute with the value `indoor-outdoor`. You have either omitted the value or have a typo. Remember that attribute values should be surrounded with quotation marks.