Copied css, js and relevant file to webroot folder. Then call css and js file to src->Template->Layout->default.php i.e.
<head>
<?= $this->Html->charset() ?>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>
<?= $cakeDescription ?>:
<?= $this->fetch('title') ?>
</title>
<?= $this->Html->meta('icon') ?>
<?= $this->Html->css('base.css') ?>
<?= $this->Html->css('cake.css') ?>
<?= $this->Html->css('bootstrap.min') ?>
<?= $this->Html->css('freelancer.min') ?>
<?= $this->Html->script('bootstrap.min') ?>
<?= $this->Html->script('freelancer.min') ?>
<?= $this->Html->script('contact_me') ?>
<?= $this->Html->script('jqBootstrapValidation') ?>
<?= $this->fetch('meta') ?>
<?= $this->fetch('css') ?>
<?= $this->fetch('script') ?>
</head>
After including these file, css is not working properly. As I am new to here Please somebody guide me the proper way to include the bootstrap template in a cakephp 3 project.