Merge pull request #10550 from overleaf/jel-cms-btn-color-blocks

[web] Buttons in CMS color blocks for new CSS

GitOrigin-RevId: 162223c2bde95922c8619eb45b9c5e32d0c4084d

services/web/frontend/stylesheets/app/content_page.less

@@ -82,7 +82,9 @@
       &.green-dark,
       &.blue-gray-dark {
         .no-card * {
-          color: @white;
+          &:not(.btn) {
+            color: @white;
+          }
           a {
             text-decoration: underline;
           }