Change the styling a bot for the sub-list headings

So it looks different to the main list headings in mobile view.
Not ideal.. but maybe better?

app/templates/base.html

@@ -71,8 +71,8 @@ <h4 class="card-title">Base Package: <a href="{{ s.name }}">{{ s.name }}</a></h4
       <dd class="col-sm-9">
         <dl class="row mb-0">
         {% for ext_id, info in s.external_infos %}
-          <dt>{{ ext_id.name }}</dt>
-          <dd class="mb-1">
+          <dt class="text-muted small">{{ ext_id.name }}</dt>
+          <dd>
             <a href="{{ info.url }}">{{ info.version or info.name }}</a>
             {% for url, label in info.other_urls|dictsort %}
             | <a href="{{ url }}">{{ label }}</a>
@@ -104,7 +104,7 @@ <h4 class="card-title">Base Package: <a href="{{ s.name }}">{{ s.name }}</a></h4
       <dd class="col-sm-9">
         <dl class="row mb-0">
         {% for repo, packages in s.packages|group_by_repo|dictsort(false) %}
-          <dt>{{ repo }}</dt>
+          <dt class="text-muted small">{{ repo }}</dt>
           <dd>
             <ul class="list-unstyled mb-0">
             {% for p in packages %}

app/templates/package.html

@@ -65,8 +65,8 @@ <h4 class="card-title">Package: <a href="{{ package_url(p) }}">{{ p.name }}</a><
       <dd class="col-sm-9">
         <dl class="row mb-0">
         {% for ext_id, info in s.external_infos %}
-          <dt>{{ ext_id.name }}</dt>
-          <dd class="mb-1">
+          <dt class="text-muted small">{{ ext_id.name }}</dt>
+          <dd>
             <a href="{{ info.url }}">{{ info.version or info.name }}</a>
             {% for url, label in info.other_urls|dictsort %}
             | <a href="{{ url }}">{{ label }}</a>