Just started the curriculum about 6 days ago. I’ve completed the basic challenges for Basic HTML and CSS, finished the 1st project for Responsive Web Design and am about to start the Build a Survey Form.
Some of the criteria for this project is to have an HTML5 error if email/number format is entered incorrectly. I do not recall seeing this lesson in the HTML/CSS challenges, maybe I just overlooked it by going to too fast. Could someone point me to the right lesson(s) in the curriculum? Thank you.