disable img bg animation

causes performance issues

assets/css/bootstrap-style.scss

@@ -333,7 +333,8 @@ a:not(:has(img)):not([class*="btn"]):not(.nav-link) {
 // rules for image placeholder
 img {
   background-color: map-get($custom-colors, neutral-700);
-  animation: placeholder-glow-custom 2s ease-in-out infinite;
+  /* TODO: properly disable animation once image is loaded to avoid performance issues */
+  /* animation: placeholder-glow-custom 2s ease-in-out infinite; */
 }
 
 @keyframes placeholder-glow-custom {