login.html code:(I want to connect this login page to the main page of project. how i do this? please help me to solve this problem)
<head>
<title>login form</title>
<link rel="stylesheet" type="text/css" href="./style.css">
<form method="post" action="http://www.yourdomain.com/index.html"></form>
</head>
<body>
<form method="post" action="index.html"></form>
<div class="login-form">
<h1>Login Form</h1>
<form action="#" method="post">
<p>User Name</p>
<input type="text" name="user" placeholder="User Name">
<p>Password</p>
<input type="password" name="password" placeholder="password">
<button type="submit" onclick="Function()">Login</button>
<input type="submit" name="" value="Login">
</form>
</div>
</div>
index.html:(its a index.html page. i want connect the login page to the this page . index.html is i use to run the project.how i connect the login page to the main page)
<head>
<title> GSMS </title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">
<meta name="apple-mobile-web-app-capable" content="yes"/>
<meta name="csrf-token" content="kmapods5wQ5L1hn7rcR9OPst7EsN0gC7SrHh3m9K"/>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/material-design-iconic-font/2.2.0/css/material-design-iconic-font.min.css">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:400,300,600,700">
<link rel="stylesheet" href="index.css">
<link media="all" type="text/css" rel="stylesheet" href="css/bootstrap.min.css">
<link media="all" type="text/css" rel="stylesheet" href="css/style.css?v=1.0">
<link media="all" type="text/css" rel="stylesheet" href="css/sidebar-menu.css?v=1.0">
<link media="all" type="text/css" rel="stylesheet" href="css/custom.css?v=1.3.3">
</head>
<body class="tooltips">
<div class="container">
<div class="header content rows-content-header">
<button class="button-menu-mobile show-sidebar">
<i class="fa fa-bars"></i>
</button>
<div class="navbar navbar-default" role="navigation">
<div class="container">
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav visible-lg visible-md limit-chars">
</a>
<ul class="breadcrumb">
<a href="index.html">
<i class="zmdi zmdi-view-dashboard zmdi-hc-fw" title="Orders"></i>
</a>
<a href="manage-product.html">
<i class="zmdi zmdi-assignment zmdi-hc-fw" title="Products"></i>
</a>
</ul>
</ul>
</div>
</div>
</div>
</div>
<div class="right content-page">
<div class="body content rows scroll-y">
<form class="form-horizontal" action="">
<div class="box-info full" id="taskFormContainer">
<h2>Grocery Store Management System</h2>
<div class="panel-body pt-0">
<div class="row mb-4">
<div class="col-sm-12">
<a href="order.html" class="btn btn-sm btn-primary pull-right ml-3">
New Order
</a>
<a href="manage-product.html" class="btn btn-sm btn-primary pull-right">
Manage Products
</a>
</div>
</div>
<table class="table table-bordered">
<thead>
<th>Date</th>
<th>Order Number</th>
<th>Customer Name</th>
<th>Total Cost</th>
</thead>
<tbody>
</tbody>
</table>
</div>
</div>
</form>
<div class="modal " id="userProfileModal" role="dialog" >
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-body text-center">
</div>
</div>
</div>
</div>
</div>
</div>
<div class="modal fade-scale" id="myModal" role="dialog" data-backdrop="static">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-body text-center">
<img src="https://demo.test.cloint.com/assets/images/spinner.gif" width="40" style="margin: 60px auto;" alt="">
</div>
</div>
</div>
</div>
</div>
</body>
<script src="js/packages/jquery.min.js"></script>
<script src="js/custom/common.js"></script>
<script src="js/custom/dashboard.js"></script>