When users submit an order for the largest, strongest coffee with a flavor shot, unlock an achievement: Bring up a Bootstrap modal to inform them of their amazing intensity and commitment to flavor. Ask them if they would like to use their achievement, and, if so, add an additional form field that is only visible when their email address is entered in the email field. It should let them choose one or more power-up options for their coffee, like time travel, mind reading, or bug-free code.

Refer to the documentation at getbootstrap.com/​javascript for information on how to include and trigger Bootstrap’s modal behaviors. (You will need to add a <script> tag from cdnjs.com for Bootstrap’s JavaScript code.)