Update base styles

assets/css/app.css

@@ -1,10 +1,26 @@
-@tailwind preflight;
+@tailwind base;
+
+h1, h2, h3 {
+  @apply font-bold
+}
+
+h1 {
+  @apply text-4xl
+}
+
+h2 {
+  @apply text-2xl
+}
+
+img {
+  @apply max-w-full h-auto
+}
 
 a {
   @apply text-blue no-underline;
 
   &:hover {
-    @apply underline;
+    @apply underline
   }
 }