Fix cards arrangement on services page

A change on the frontpage affected the services page. This change reverts the original behavior for the services page while retatining the layout for the frontpage.

_sass/common/_cards.scss

 .flex-cards {
     display: flex;
     flex-flow: wrap;
-    justify-content: center;
+    justify-content: flex-start;
 
     margin-top: 0rem;
     margin-bottom: 0rem;