Part-DB.Part-DB-server/templates/_toast.html.twig

{% set flash_title = label|replace({'success': 'flash.success', 'error': 'flash.error'
    , 'warning': 'flash.warning', 'notice': 'flash.notice', 'info': 'flash.info'}) %}
        {% set flash_symbol = label|replace({'success': 'fa-check-circle', 'error': 'fa-exclamation-triangle'
            , 'warning': 'fa-exclamation-circle', 'notice': 'fa-flag', 'info': 'fa-flag'}) %}

        {% set flash_bg = label|replace({'success': 'bg-success text-white',
            'error': 'bg-danger text-white', 'warning': 'bg-warning text-white',
            'notice': 'bg-info text-white', 'info': 'bg-light'})%}

<div class="toast shadow" role="alert" aria-live="assertive" aria-atomic="true" data-delay="5000" {{ stimulus_controller('common/toast') }}>
    <div class="toast-header {{ flash_bg }}">
        {# <img src="..." class="rounded mr-2" alt="...">#}
        <i class="fas fa-fw {{ flash_symbol }} mr-2"></i>
        <strong class="mr-auto">{{ flash_title|trans }}</strong>
        <small class="{% if "text-white" in flash_bg %}text-white{% else %}text-muted{% endif %}">{{ "now" | format_datetime("short", "short") }}</small>
        <button type="button" class="ml-2 mb-1 close" data-dismiss="toast" aria-label="Close">
            <span aria-hidden="true">&times;</span>
        </button>
    </div>
    <div class="toast-body {{ flash_bg }}">
        {{ message | trans }}
    </div>
</div>