make links responsive

_includes/card.html

@@ -20,7 +20,7 @@
             </div>
             {% endif %}
             <p><img src="{{include.image}}" alt="{{include.title}}" class="panel-item">{{include.description}}</p>
-            <div class="card-bottom">
+            <div>
             <p>
                 <a class="btn btn-{{include.color}} mb-1" href="{{include.url}}">Website: 
                     {% if include.website %}