diff --git a/01_lesson/src/index.css b/01_lesson/src/index.css
index 427632c..f02e839 100644
--- a/01_lesson/src/index.css
+++ b/01_lesson/src/index.css
@@ -17,10 +17,6 @@ button {
   padding: 0.5rem;
 }
 
-#root {
-  width: 100%;
-}
-
 section {
   display: flex;
   flex-direction: column;