Add postcss-import, split tailwind.css

vuejs/src/assets/css/base.css

@@ -0,0 +1,17 @@
+h1,
+h2 {
+  @apply font-semibold
+}
+
+input,
+textarea {
+  @apply mt-1 p-2 w-full border border-gray-400
+}
+
+input[type=submit] {
+  @apply w-full;
+
+  @screen sm {
+    @apply w-auto
+  }
+}

vuejs/src/assets/css/tailwind.css

@@ -1,23 +1,6 @@
-@tailwind base;
+@import 'tailwindcss/base';
+@import './base.css';
 
-h1,
-h2 {
-  @apply font-semibold
-}
+@import 'tailwindcss/components';
 
-input,
-textarea {
-  @apply mt-1 p-2 w-full border border-gray-400
-}
-
-input[type=submit] {
-  @apply w-full;
-
-  @screen sm {
-    @apply w-auto
-  }
-}
-
-@tailwind components;
-
-@tailwind utilities;
+@import 'tailwindcss/utilities';