Revert "update ng 15"

This reverts commit f46c5ce47c.

src/app/widget-modules/components/card/card.component.less

@@ -3,10 +3,12 @@
 .card {
   margin: 20px;
   border-radius: 8px;
-  background: #fff;
+  background: #fffc;
+  backdrop-filter: blur(12px);
   overflow: hidden;
   width: 800px;
   position: relative;
+  transition: all 150ms ease-in-out;
 
   @media screen and (max-width: 860px) {
     width: 100vw;