/* Without a script there is nothing to toggle, so the CSS the design kit ships takes over: no burger, the bar as a static list, and the panels on hover and :focus-within. `:focus-within` is what makes it keyboard operable - the trigger itself is inside the group, so tabbing to it opens the panel and the links behind it become reachable. Written out rather than expressed in utilities: this block is left untouched by Astro (`is:inline`), so it is plain CSS. 1024px is `--breakpoint-lg`, which a media query cannot read from a variable. **`@layer base` and `!important` together are load-bearing, and neither works without the other.** The bar and the panels carry the `hidden` attribute in the markup, so that a drawer does not flash open on a phone in the moment between parse and hydration. Tailwind's preflight implements that attribute as `[hidden]:where(:not([hidden="until-found"])) { display: none !important }` - an important declaration, and one that sits inside `@layer base`. For *important* declarations the cascade reverses the layer order: an important declaration in a layer beats an important declaration in no layer at all, whatever its specificity. So an unlayered `display: flex !important` here loses to preflight, and losing it means a JavaScript-less visitor gets a header with no navigation in it at all. Declaring these rules into `base` puts them in the same layer as preflight, where specificity decides again and `[data-mega-menu] [data-menu-bar]` (0,2,0) beats `[hidden]` (0,1,0). These rules are inside `<noscript>`, so they only ever apply where there is no script to remove the attribute. */ @layer base { [data-mega-menu] [data-menu-toggle], [data-mega-menu] [data-menu-close] { display: none; } [data-mega-menu] [data-menu-bar] { display: flex !important; } [data-mega-menu] [data-menu-group]:hover [data-menu-panel], [data-mega-menu] [data-menu-group]:focus-within [data-menu-panel] { display: block !important; } @media (max-width: 1023.98px) { [data-mega-menu] [data-menu-bar] { display: block !important; position: static; overflow: visible; padding: 0; background: transparent; } } }

18. Juni 2021 · Wettbewerb

5. Roboterwettbewerb RoboRAVE Germany

Standbild aus dem Erklärvideo: ein Jugendlicher sitzt mit zwei Laptops vor den Regalen voller Roboter, darüber ist eine zweite Aufnahme geblendet

Der Roboterwettbewerb RoboRAVE Cyberspace 2021 wird vom 26. - 27. Juni als digitaler Roboterwettbewerb vom phænovum Schülerforschungszentrum Lörrach-Dreiländereck e.V. durchgeführt. Anmeldungen sind noch bis Donnerstag, 24. Juni 2021, 24 Uhr möglich. In drei Challenges und drei Wettbewerbskategorien sind Preise im Wert von 20 bis 100 Euro ausgelobt. Der RoboRAVE Cyberspace 2021 basiert auf dem Open Roberta Lab, einer offenen Robotik-Plattform des Fraunhofer Instituts IAIS.

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