diff --git a/public/admin.css b/public/admin.css
index ff600e2..e09964a 100644
--- a/public/admin.css
+++ b/public/admin.css
@@ -141,6 +141,10 @@ a {
     box-shadow: 0 16px 40px rgba(23, 32, 51, 0.06);
 }
 
+.admin-card {
+    padding: 24px;
+}
+
 .admin-table {
     width: 100%;
     border-collapse: collapse;
diff --git a/tests/AdminCssTest.php b/tests/AdminCssTest.php
new file mode 100644
index 0000000..c5a8fac
--- /dev/null
+++ b/tests/AdminCssTest.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Tests;
+
+use PHPUnit\Framework\TestCase;
+
+final class AdminCssTest extends TestCase
+{
+    public function testAdminCardDefinesInnerPadding(): void
+    {
+        $css = (string) file_get_contents(dirname(__DIR__).'/public/admin.css');
+
+        self::assertMatchesRegularExpression('/\.admin-card\s*\{[^}]*\bpadding:\s*24px;/s', $css);
+    }
+}