.blog-post-menu_template._overIndex{
    position: sticky;
    top: 0px;
    z-index: 99;
}
@supports ((-webkit-backdrop-filter: blur(10px)) or (backdrop-filter: blur(10px))) {
  .blog-post-menu_template._overIndex{
      background-color: rgba(222,222,222,0.4);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }
}