Improve sponsor card

sponsors/templates/sponsors/_sponsor_card.html

-<div class="card">
-  <img class="card-img-top {{ sponsor.css_class }} p-2" src="{% if sponsor.logo %}{{ sponsor.logo.url }}{% endif %}" alt="{{ sponsor.name }} logo">
-  <div class="card-body bg-light">
+<div class="card text-center">
+  {% if sponsor.logo %}
+  <img class="card-img-top {{ sponsor.css_class }} p-2" style="max-height: 16rem; max-width: 16rem;" src="{% if sponsor.logo %}{{ sponsor.logo.url }}{% endif %}" alt="{{ sponsor.name }} logo">
+  {% endif %}
+  <div class="card-body bg-light text-left">
     <h4 class="card-title">
       {% if sponsor.name_original %}{{ sponsor.name_original }}{% else %}{{ sponsor.name }}{% endif %}</h4>
     {% if sponsor.name_original %}