Change src to assets

wp-content/themes/twentynineteen-tailwindcss/assets/css/components/content.css

@@ -0,0 +1,45 @@
+.markup,
+.comment-content,
+.entry-content {
+  @apply font-serif text-lg leading-loose;
+
+  @screen md {
+    @apply text-xl;
+  }
+
+  > * {
+    @apply max-w-2xl;
+
+    @screen 2xl {
+      @apply max-w-full;
+    }
+  }
+
+  h2 {
+    @apply text-2xl font-bold mt-8 -mb-5;
+  }
+
+  a {
+    @apply text-blue-700 underline;
+
+    &:hover {
+      @apply text-blue-800 no-underline;
+    }
+  }
+
+  * + * {
+    @apply mt-6;
+  }
+
+  p {
+    @apply font-serif;
+  }
+
+  ul {
+    @apply list-disc ml-6;
+  }
+
+  li + li {
+    @apply mt-0;
+  }
+}