WIP on add/edit feed page (#4)

Mostly style tweaks

src/public/feed.php

@@ -8,23 +8,29 @@
 include '../start.php';
 
 Security::verifyUser();
-page_head('Feed page');
 
 if ($_SERVER['REQUEST_METHOD'] == 'POST') {
     // TODO: get feed, add if new, reject if existing but not owned by this user, update otherwise
-    $feed = array();
+    $feed = [ 'id' => $_POST['id'], 'url' => $_POST['url'] ];
+    $title = 'TODO';
 } else {
     // TODO: Retrieve feed by ID if not new
     $feed = [ 'id' => $_GET['id'], 'url' => '' ];
+    $title = 'Add RSS Feed';
 }
+page_head($title);
+
 ?>
-<h1>Add/Edit Feed</h1>
-<form method=POST action=/feed hx-post=/feed>
-    <input type=hidden name=id value="<?=$feed['id']?>">
-    <label>
-        Feed URL
-        <input type=url name=url required autofocus value="<?=$feed['url']?>">
-    </label>
-</form>
+<h1><?=$title?></h1>
+<article>
+    <form method=POST action=/feed hx-post=/feed>
+        <input type=hidden name=id value=<?=$feed['id']?>>
+        <label>
+            Feed URL
+            <input type=url name=url required autofocus value="<?=$feed['url']?>">
+        </label><br>
+        <button type=submit>Save</button>
+    </form>
+</article>
 <?php
 page_foot();