*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;min-height:100vh}``` Then open **App.css** in Notepad and delete everything in it — leave it completely empty. Save both files. Then go back to Command Prompt and run these three commands one at a time: ``` git add . ``` ``` git commit -m "fix layout" ``` ``` git push origin main{}