Merge branch 'fix-cards-on-services-page' into 'master'

Fix cards arrangement on services page

See merge request hifis/hifis.net!252

_sass/common/_cards.scss

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

assets/css/frontpage.scss

@@ -145,3 +145,7 @@
 
     margin: 0.5rem;
 }
+
+.flex-cards {
+    justify-content: center;
+}