Move CSS into a separate file, quicker to build

src/assets/css/tailwind.css

@@ -0,0 +1,36 @@
+@tailwind base;
+
+html {
+  line-height: 1.15;
+}
+
+@tailwind components;
+
+h1,
+h2 {
+  @apply font-bold
+}
+
+h2 {
+  @apply text-2xl
+}
+
+.btn {
+  @apply text-sm font-thin antialiased text-white px-4 py-3 no-underline rounded mx-1 bg-blue-300;
+
+  &:hover,
+  &:focus {
+    @apply bg-blue-400
+  }
+}
+
+.btn.is-secondary {
+  @apply bg-gray-500;
+
+  &:hover,
+  &:focus {
+    @apply bg-gray-600
+  }
+}
+
+@tailwind utilities;