Merge pull request #10573 from overleaf/jel-cms-vertically-center

[web] Vertically center columns on CMS pages when selected

GitOrigin-RevId: f4b5abd0f8549329bf5d0a6f0f90900b42674763

services/web/frontend/stylesheets/app/cms-page.less

@@ -341,3 +341,13 @@
   left: 4px;
   bottom: 1px;
 }
+
+.vertically-center-col {
+  @media (min-width: @screen-sm-min) {
+    display: flex;
+
+    * {
+      align-self: center;
+    }
+  }
+}