pyfedi/app/templates/_home_nav.html

<div class="btn-group mt-1 mb-2">
    <a href="/{{ type }}/hot" class="btn {{ 'btn-primary' if sort == 'hot' else 'btn-outline-secondary' }}" rel="nofollow">
        {{ _('Hot') }}
    </a>
    <a href="/{{ type }}/top" class="btn {{ 'btn-primary' if sort == 'top' else 'btn-outline-secondary' }}" rel="nofollow">
        {{ _('Top') }}
    </a>
    <a href="/{{ type }}/new" class="btn {{ 'btn-primary' if sort == 'new' else 'btn-outline-secondary' }}" rel="nofollow">
        {{ _('New') }}
    </a>
</div>