fixed!

Author: PolGuixe

src/components/Layout/styles.js

@@ -35,6 +35,7 @@ const styles = theme => ({
   main: {
     paddingTop: '0px',
     display: 'flex',
+    width: '100%',
     transition: theme.transitions.create(['margin', 'width'], {
       easing: theme.transitions.easing.sharp,
       duration: theme.transitions.duration.leavingScreen,