add custom text field to shopify contact form with html

1<!-- 
2 	Add the below code to your page.contact.liquid file 
3
4	Note: dont forget to repalce the "dummy text" (Birthday) with your own value!
5-->
6<label for="ContactFormBirthday">Birthday</label>
7<input
8  type="text"
9  id="ContactFormBirthday"
10  name="contact[Birthday]"
11  placeholder="Birthday"
12/>
13<!-- 
14	Bonus: This is where you will find all the info that you need (link below):
15	https://shopify.dev/tutorials/customize-theme-add-fields-to-your-contact-form#customize-your-form-fields
16-->
17<!-- Happy coding, my homies <3 -->