38686-vm/core/templates/admin/base_site.html

{% extends "admin/base.html" %}
{# ===========================================================
   Minimal override of the default admin/base_site.html.
   The sole purpose right now is to inject a small <style> block
   into every Django admin page. Add more admin CSS tweaks here
   as needed — keeps them in one place and isolated from the
   main app's custom.css.
   =========================================================== #}

{% block title %}{{ title }} | {{ site_title|default:_('Django site admin') }}{% endblock %}

{% block branding %}
<h1 id="site-header"><a href="{% url 'admin:index' %}">{{ site_header|default:_('Django administration') }}</a></h1>
{% endblock %}

{% block extrastyle %}{{ block.super }}
<style>
    /* === FILTERED SELECT WIDGET (M2M pickers like Group permissions) ===
       The default Django admin filtered-select has a fairly short
       `height: 16em` on each side, so long permission lists need lots
       of scrolling. Make both "Available" and "Chosen" boxes taller
       by default — they expand with the viewport up to a cap.
       Applies to any filter_horizontal / filter_vertical M2M field. */
    .selector .selector-available select,
    .selector .selector-chosen select {
        min-height: 30em;   /* was ~16em by default */
        height: 30em;
    }
    /* On large screens, push a bit taller */
    @media (min-height: 900px) {
        .selector .selector-available select,
        .selector .selector-chosen select {
            min-height: 40em;
            height: 40em;
        }
    }
    /* Match the titles' layout so the boxes stay aligned */
    .selector .selector-available,
    .selector .selector-chosen {
        height: auto;
    }
</style>
{% endblock %}

{% block nav-global %}{% endblock %}