QT5设定QWebEngineView大小

最近在一个小项目里头需要用到QWebEngineView，查询了网上各位大佬的用法，发现都是塞满整个窗口或者是用布局器和其他元素排列实现“非全屏”，类似这种


但这都不是我想要的，能不能让它，就是变成我想要的形状，你懂我意思吧
比如这样

直接贴代码
ui文件转的ui.py文件

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file '.\TBLive_mainWindow.ui'
#
# Created by: PyQt5 UI code generator 5.15.6
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(1397, 1046)
        font = QtGui.QFont()
        font.setPointSize(9)
        MainWindow.setFont(font)
        MainWindow.setStyleSheet("")
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.widget = QtWidgets.QWidget(self.centralwidget)
        self.widget.setGeometry(QtCore.QRect(310, 10, 1071, 931))
        self.widget.setObjectName("widget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 1397, 26))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

demo.py

import sys
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtWebEngineWidgets import *

from ui import Ui_MainWindow


class MyMainWindow(QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(MyMainWindow, self).__init__(parent)
        self.setupUi(self)

        self.browser = QWebEngineView(self.widget)

        # 加载外部的web界面
        self.browser.load(QUrl('https://www.cnblogs.com/Jamin-Ben/'))
        # 设置大小与widget一致
        self.browser.setGeometry(0,0,self.widget.width(),self.widget.height())
        # 设置缩放
        self.browser.setZoomFactor(0.5)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    myWin = MyMainWindow()
    myWin.show()
    sys.exit(app.exec_())