Add-ons let millions of Firefox users enhance and customize their browsing experience. If you're a Web developer and know <a href="https://developer.mozilla.org/docs/Web/HTML">HTML</a>, <a href="https://developer.mozilla.org/docs/Web/JavaScript">JavaScript</a>, and <a href="https://developer.mozilla.org/docs/Web/CSS">CSS</a>, you already have all the necessary skills to make a great add-on.
Přidatki zmóžnjeja milionam wužiwarjow Firefox jich přehladowanske dožiwjenje polěpšić. Jeli sće webwuwiwar a so w <a href="https://developer.mozilla.org/docs/Web/HTML">HTML</a>, <a href="https://developer.mozilla.org/docs/Web/JavaScript">JavaScript</a> a <a href="https://developer.mozilla.org/docs/Web/CSS">CSS</a> wuznawaće, maće hižo trěbne znajomosće, zo byšće wulkotny přidatk wutworił.