Bulma v9 website (#3249)

* Add Bulma v9

* Add vendor dependencies

* Fix native

* Fix sponsors

* Add style attribute

docs/lib/start.js

@@ -0,0 +1,39 @@
+'use strict';
+
+document.addEventListener('DOMContentLoaded', function () {
+  // Utils
+
+  var tabs = getAll('.bd-tabs');
+
+  if (tabs && tabs.length > 0) {
+    tabs.forEach(function (tab) {
+      var buttons = getAll('.bd-tabs-nav button', tab);
+      var items = getAll('.bd-tabs-item', tab);
+
+      buttons.forEach(function (button, index) {
+        button.addEventListener('click', function (event) {
+          showTab(buttons, items, index);
+        });
+      });
+    });
+  }
+
+  function showTab(buttons, items, index) {
+    buttons.forEach(function (button) {
+      button.classList.remove('bd-is-active');
+    });
+
+    items.forEach(function (item) {
+      item.classList.remove('bd-is-active');
+    });
+
+    buttons[index].classList.add('bd-is-active');
+    items[index].classList.add('bd-is-active');
+  }
+
+  function getAll(selector) {
+    var parent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : document;
+
+    return Array.prototype.slice.call(parent.querySelectorAll(selector), 0);
+  }
+});