A horizontal navigation that keeps as many items visible as fit. Lower-priority items move into a "More" overlay when there isn't enough room. Works without JavaScript via a checkbox + media-query fallback.
Drag the handle on the right to shrink the container and watch items move into the More menu.
At sm-and-below the entire strip collapses into the More menu.
Open DevTools, disable JavaScript, and reload the page. The strip continues to work:
hideBelow input.<label> tied to a hidden <input type="checkbox">.:checked sibling selector — purely CSS.