<PLEASE USE THE FOLLOWING TEMPLATE TO HELP YOU CREATE A GREAT POST!>
<Below this line, add a link to the EXACT exercise that you are stuck at.>
https://www.codecademy.com/en/courses/learn-sass/lessons/sustainable-scss/exercises/extend-vs-mixin?action=resume
<In what way does your code behave incorrectly? Include ALL error messages.>
The instructions say to “Convert the placeholder named %center inside the helper/_placeholders.scss partial.” but there is nothing inside of _placeholders.scss
UPDATE: found the solution here: https://discuss.codecademy.com/t/cant-find-problem-with-7-extend-vs-mixin/45159/2
```<do not remove the three backticks above>