When you ask a question, don’t forget to include a link to the exercise or project you’re dealing with!
https://www.codecademy.com/paths/learn-how-to-build-websites/tracks/intermediate-css/modules/learn-css-box-model/lessons/box-model-new/exercises/box-border
If you want to have the best chances of getting a useful answer quickly, make sure you follow our guidelines about how to ask a good question. That way you’ll be helping everyone – helping people to answer your question and helping others who are stuck to find the question and answer! 