🚨 fixing favicon and app.css errors

Signed-off-by: Sindre Kjelsrud <kjelsrudsindre@gmail.com>

frontend/src/app.html

@@ -4,6 +4,7 @@
 		<meta charset="utf-8" />
 		<meta name="viewport" content="width=device-width, initial-scale=1" />
 		<meta name=description content="AI i medisin">
+		<link rel="icon" type="image/x-icon" href="/favicon.ico">
 		<link rel="stylesheet" href="./app.css" />
 		<title>Helseveileder</title>
 		%sveltekit.head%

frontend/static/app.css

@@ -0,0 +1,7 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+body {
+	background: #eef0f3;
+}