#system-tag {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #ffeb3b;
  color: #333;
  text-align: center;
  z-index: 10000; /* Stacks above other page elements */
  font-weight: bold;
}

/* When using gin navigation, give the side bar some space */
/* core experimental navigation */
html[data-admin-toolbar] body:has(#system-tag) aside#admin-toolbar,
html[data-admin-toolbar] body:has(#system-tag) #gin_sidebar,
html[data-admin-toolbar] body:has(#system-tag) div.toolbar-popover__wrapper,

/* gin toolbar */
body.gin--navigation:has(#system-tag) #gin_sidebar,
body.gin--navigation:has(#system-tag) aside#admin-toolbar {
  padding-top: 24px;
}