refactored css, including some markup changes

app/templates/fxPromo/fxPromo.css

@@ -0,0 +1,56 @@
+.fxPromo {
+  padding: 0 15px;
+  height: 48px;
+  background-color: #efeff1;
+  color: #4a4a4f;
+  font-size: 13px;
+  display: flex;
+  flex-direction: row;
+  align-content: center;
+  align-items: center;
+  justify-content: center;
+}
+
+.fxPromo > div {
+  display: flex;
+  align-items: center;
+  margin: 0 auto;
+}
+
+.fxPromo > div > span {
+  margin-left: 10px;
+}
+
+.fxPromo__logo {
+  width: 24px;
+}
+
+.fxPromo--blue {
+  background: linear-gradient(-180deg, #45a1ff 0%, #00feff 94%);
+  color: #fff;
+}
+
+.fxPromo--pink {
+  background: linear-gradient(-180deg, #ff9400 0%, #ff1ad9 94%);
+  color: #fff;
+}
+
+.fxPromo--blue a {
+  color: #fff;
+  font-weight: bold;
+}
+
+.fxPromo--pink a {
+  color: #fff;
+  font-weight: bold;
+}
+
+.fxPromo--blue a:hover {
+  color: #eee;
+  font-weight: bold;
+}
+
+.fxPromo--pink a:hover {
+  color: #eee;
+  font-weight: bold;
+}

app/templates/fxPromo/index.js

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+const html = require('choo/html');
+const assets = require('../../../common/assets');
+
+module.exports = function(state, emit) {
+  function clicked() {
+    emit('experiment', { cd3: 'promo' });
+  }
+  let classes = 'fxPromo';
+  switch (state.promo) {
+    case 'blue':
+      classes = 'fxPromo fxPromo--blue';
+      break;
+    case 'pink':
+      classes = 'fxPromo fxPromo--pink';
+      break;
+  }
+
+  return html`
+    <div class="${classes}">
+      <div>
+        <img
+        src="${assets.get('firefox_logo-only.svg')}"
+        class="fxPromo__logo"
+        alt="Firefox"/>
+        <span>Send is brought to you by the all-new Firefox.
+        <a
+          class="link"
+          href="https://www.mozilla.org/firefox/new/?utm_campaign=send-acquisition&utm_medium=referral&utm_source=send.firefox.com"
+          onclick=${clicked}
+          >Download Firefox now ≫</a></span>
+      </div>
+    </div>`;
+};