timetracker/games/templates/cotton/popover.html

<span data-popover-target={{ id }} class="{{ class }}">{{ wrapped_content|default:slot }}</span>
<div data-popover
     id="{{ id }}"
     role="tooltip"
     class="absolute z-10 invisible inline-block text-sm text-white transition-opacity duration-300 bg-white border border-purple-200 rounded-lg shadow-sm opacity-0 dark:text-white dark:border-purple-600 dark:bg-purple-800">
    <div class="px-3 py-2">{{ popover_content }}</div>
    <div data-popper-arrow></div>
</div>