Function handleWindowWidthChange

src/components/Header/Header.js:72–77

()

  });

  function handleWindowWidthChange() {
    let windowWidth = window.innerWidth;
    let breakpointWidth = theme.breakpoints.values.md;
    let isSmallScreen = windowWidth < breakpointWidth;
    setSmall(isSmallScreen);
  }

  return (
    <AppBar position='fixed' className={classes.appBar}>