Usage PHP/HTML:
<!-- Blok opbouw -->
<?php
// Create class name for block.
$block_prefix = 'custom_name_here';
// Create id attribute allowing for custom "anchor" value.
$id = $block_prefix . '-' . ($block['id'] ?? '0');
if (!empty($block['anchor'])) {
$id = $block['anchor'];
}
// Create class attribute allowing for custom "className" and "align" values.
$class_name = $block_prefix;
if (!empty($block['className'])) {
$class_name .= ' ' . $block['className'];
}
if (!empty($block['align'])) {
$class_name .= ' align' . $block['align'];
}
?>
<section id="<?= $id ?>" class="<?= $class_name ?>">
<div class="wrapper wrapper-*">
</div>
</section>