Add new styles and update text in Footer and Header components.

src/app.css

@@ -8,4 +8,12 @@
 body {
     @apply bg-gray-800 text-zinc-100;
     font-family: 'Roboto Condensed', sans-serif;
+}
+
+.input-text-field {
+    @apply text-gray-800 p-2 rounded-md;
+}
+
+.button-primary {
+    @apply bg-blue-500 text-white px-4 py-2 rounded-md hover:bg-blue-600;
 }