单击时无法删除材料用户界面appBar中的边距并更改菜单项的外观

如何解决单击时无法删除材料用户界面appBar中的边距并更改菜单项的外观

我正在使用react&material ui创建一个内容网站。在抽屉组件内部,我包含了一个appBar。一切正常。但我想在外观和功能上做些微改动。我不能做以下两件事,

  1. 删除appBar周围的边距
  2. 单击时更改菜单按钮的外观。

页面的当前状态如下,

enter image description here

submenu.js

import React,{Fragment,useCallback,useState} from 'react';
import { makeStyles } from '@material-ui/core/styles';
import AppBar from '@material-ui/core/AppBar';
import {Link} from "react-router-dom";
import ListItemText from "@material-ui/core/ListItemText";
import ListItem from "@material-ui/core/ListItem";
import Typography from "@material-ui/core/Typography";
import Toolbar from "@material-ui/core/Toolbar";

const useStyles = makeStyles((theme) => ({
  root: {
    flexGrow: 1,width: '100%',backgroundColor: theme.palette.background.paper,},appBar: {
    shadowColor: '#206a5d',zIndex: theme.zIndex.drawer,transition: theme.transitions.create(['width','margin'],{
      easing: theme.transitions.easing.sharp,duration: theme.transitions.duration.leavingScreen,}),}));

export function Submenu({items,header}) {
  const classes = useStyles();
  const [selected,setSelected] = useState(false);

  const clickHandler = useCallback(
    () => {
      setSelected(!selected)
    },[selected],);


  return (
    <Fragment>
    <div className={classes.root}>
      <AppBar position="sticky"
              color="inherit"
              className={classes.appBar}
              style={{margin: 0}}
      >
        <Typography style={{marginLeft: '1.5rem'}}>
          <h1 style={{color:'#1f4068'}}>{header}</h1>
        </Typography>
        <div style={{display: 'flex'}}>
          {items.map(item =>
          <ListItem button
                    dense
                    key={item.title}
                    component={Link}
                    to={item.to || '/404'}
                    style={{padding:'0.25rem',textAlign: 'center',}}
          >
            <ListItemText primary={item.title} />
          </ListItem>
        )}
        </div>
      </AppBar>
    </div>
      </Fragment>
  );
}

Technical.js

import React,{Fragment} from "react";
import {Submenu} from "../submenu";
import {TechIntro} from "./Introduction";
import {TheDowTheory} from "./DowTheory";
import {Charts} from "./Charts";
import {Trends} from "./Trendlines";
import {Support} from "./Support";
import {Indicators} from "./Indicators";
import {TechRoutes} from "./TechRoutes";
import {makeStyles} from "@material-ui/core/styles";
import {BrowserRouter as Router} from "react-router-dom";

const useStyles = makeStyles((theme) => ({
  toolbar: {
    display: 'flex',alignItems: 'center',justifyContent: 'flex-end',padding: theme.spacing(0,1),// necessary for content to be below app bar
    ...theme.mixins.toolbar,content: {
    flexGrow: 1,padding: theme.spacing(3),}));

const menu = [
  {
    title: 'Introduction',to: '/technical',component: TechIntro
  },{
    title: 'The Dow Theory',to: '/thedowtheory',component: TheDowTheory
  },{
    title: 'Chart Patterns',to: '/chart',component: Charts
  },{
    title: 'Trend Lines',to: '/trends',component: Trends
  },{
    title: 'Support/Resistance',to: '/support',component: Support
  },{
    title: 'Technical Indicators',component: Indicators,to: '/indicators'
  },{
    title: 'Fibonacci',component: 'Fibonacci',to: '/fibonacci'
  },{
    title: 'Risk Management',component: 'Risk',to: '/risk'
  },]

export const Technical = () => {
  const classes = useStyles()

  return (
    <Fragment>
        <Router>
          <Submenu items={menu} header={'Technical Analysis'} />
          <TechRoutes />
        </Router>
    </Fragment>
  )
}

TechRoutes.js

import React from "react";
import {Switch,Route,Redirect} from "react-router-dom";
import {TheDowTheory} from "./DowTheory";
import {TechIntro} from "./Introduction";
import {Charts} from "./Charts";
import {Trends} from "./Trendlines";
import {Support} from "./Support";
import {Indicators} from "./Indicators";

export const TechRoutes = () => {
  return (
    <Switch>
      <Route path="/technical" component={TechIntro} />
      <Route path="/thedowtheory" component={TheDowTheory} />
      <Route path="/chart" component={Charts} />
      <Route path="/trends" component={Trends} />
      <Route path="/support" component={Support} />
      <Route path="/indicators" component={Indicators} />
      {/*<Route path="/404" component={NotFound} />*/}
      <Redirect to="/404" />
    </Switch>
  );
}

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