function.php load styles and script

wordpress code snipps

// get feature image inside loop

<?php
  if (has_post_thumbnail()) { // check if the post has a Post Thumbnail assigned to it.
    the_post_thumbnail('full', array('class' => 'img-fluid d-block')); // show featured image
  } else { ?>
    <img src="https://via.placeholder.com/1200x750" alt="" class="img-fluid d-block">
<?php } ?>

// get images from files

<?php bloginfo('template_directory');?>/assets/img/searchhome.png

// function.php
/**
 * CUSTOM Functions
 * Load Styles
 */

function wpb_adding_styles()
{
    wp_register_style('vendor', get_template_directory_uri() . '/assets/css/vendor.css');
    wp_register_style(
            'studiod',
            // current theme, might be the child theme
            get_stylesheet_uri(),
            [ 'vendor' ]
        );
    wp_enqueue_style('studiod');
}
add_action('wp_enqueue_scripts', 'wpb_adding_styles');

function wpb_adding_scripts()
{
    wp_register_script('build', get_template_directory_uri() . '/assets/js/build.js', array('jquery'), false, true);
    wp_enqueue_script('build');
}
add_action('wp_enqueue_scripts', 'wpb_adding_scripts');


// include custom jQuery
function include_custom_jquery()
{
    wp_deregister_script('jquery');
    wp_enqueue_script('jquery', 'https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js', array(), null, true);
}
add_action('wp_enqueue_scripts', 'include_custom_jquery');


function add_image_class($class){
    $class .= ' img-fluid';
    return $class;
}
add_filter('get_image_tag_class','add_image_class');


function new_excerpt_more( $more ) {
    return '...';
}
add_filter('excerpt_more', 'new_excerpt_more');

function custom_excerpt_length() {
	return 100;
}
add_filter('excerpt_length','custom_excerpt_length');



// Create custom template

<?php
/* Template Name: Home Page */
get_header();?>

<?php
get_footer();

// Custom Query Loops

<?php
          $args = array(
              'cat' => 2,
              'posts_per_page' => 6,
              'orderby' => 'rand',
          );
          $my_query = new WP_Query($args);
          if ($my_query->have_posts()) {
              while ($my_query->have_posts()): $my_query->the_post(); ?>
            <div class="col-sm-6 mt-3 img-container">
            <a class="d-block h-100" style="overflow: hidden;" href="<?php the_permalink()?>">
            <?php
            if (has_post_thumbnail()) { // check if the post has a Post Thumbnail assigned to it.
                the_post_thumbnail('full', array('class' => 'img-fluid img-scale, h-100')); // show featured image
            } ?>
            <h5 class="text-uppercase text-center mt-2 lead">
              <?php the_title(); ?>
            </h5>
          </a>
        </div><!-- row -->
    <?php endwhile;
          }
    wp_reset_query(); ?>
        </div>