{% load crispy_forms_field %}

<div class="btn-group w-100 mb-3" role="group" aria-label="{{ field.label }}">
    {% for choice in field.field.choices %}
        <input type="radio"
               class="btn-check"
               name="{{ field.html_name }}"
               id="{{ field.html_name }}_{{ forloop.counter }}"
               value="{{ choice.0 }}"
               {% if choice.0 == field.value %}checked{% endif %}>
        <label class="btn {% if forloop.first %}btn-outline-success{% elif forloop.last %}btn-outline-danger{% else %}btn-outline-primary{% endif %}"
               for="{{ field.html_name }}_{{ forloop.counter }}">
            {{ choice.1 }}
        </label>
    {% endfor %}
</div>