add a margin between the cards

computers/templates/computers/computer_details.html

@@ -21,7 +21,7 @@
     </div>
 
     {% if device.os or software_relations or backup_relations or license_list or device.host %}
-    <div class="col">
+    <div class="col mt-3">
         <div class="card">
             <div class="card-body">
                 {% if device.host %}
@@ -67,7 +67,7 @@
     {% endif %}
 
     {% if cpu_relations or ram_relations or disks_relations or raid_disk_pairs %}
-    <div class="col">
+    <div class="col mt-3">
         <div class="card">
             <h2 class="card-header">Hardware</h2>
             <div class="card-body">