Add some spacing around pagination elements

invenio_theme_tuw/assets/semantic-ui/less/invenio_theme_tuw/theme.less

@@ -173,6 +173,10 @@ a {
   text-decoration: underline;
 }
 
+div.ui.pagination.menu {
+  margin: 2em auto;
+}
+
 /* header */
 header {
   background-color: var(--blue1);
@@ -188,7 +192,6 @@ header {
   color: white;
 }
 
-
 #signet {
   padding-left:40px;
   padding-right:40px;