Grav-Admin-Plugin/themes/grav/templates/forms/fields/array/array.html.twig

{% set value = (value is null ? field.default : value) %}

<div class="form-field grid pure-g dynfields" data-grav-dynfields="{{ field.name|fieldName }}">
    <div class="form-label block size-1-3 pure-u-1-3">
        <label>
            <span>
                {% if field.help %}
                <span class="tooltip" data-asTooltip-position="w" title="{{ field.help|e }}">{{ field.label }}</span>
                {% else %}
                {{ field.label }}
                {% endif %}
            </span>
        </label>
    </div>
    <div class="form-data block size-2-3 pure-u-2-3">

            {% if value|length %}
                {% for key, text in value %}
                <div class="form-row">
                    <input type="text" value="{{ (scope ~ key)|fieldName }}" placeholder="" />
                    <input type="text" name="{{ (scope ~ field.name)|fieldName }}[{{ key }}]" value="{{ text|join(', ') }}" placeholder="{{ field.placeholder }}" />
                    <span data-grav-remfield class="fa fa-minus"></span>
                    <span data-grav-addfield class="fa fa-plus"></span>
                </div>
                {% endfor %}
            {% else %}
                <div class="form-row">
                    <input type="text" placeholder="" />
                    <input type="text" placeholder="{{ field.placeholder }}" />
                    <span data-grav-remfield class="fa fa-minus"></span>
                    <span data-grav-addfield class="fa fa-plus"></span>
                </div>
            {% endif %}
     </div>
</div>