Fix small errors

app/modules/backend/templates/layout/backend.j2

@@ -28,7 +28,7 @@
             </ul>
         </div>
     </nav>
-    <main class="container">
+    <main class="container mt-3">
         {% with messages = get_flashed_messages(with_categories=true) %}
         {% if messages %}
         {% for category, message in messages %}

app/modules/backend/templates/public/site.j2

@@ -11,7 +11,6 @@
         <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
             <span class="navbar-toggler-icon"></span>
         </button>
-
         <div class="collapse navbar-collapse" id="navbarSupportedContent">
             <ul class="navbar-nav mr-auto">
                 {% for menu_item in menu %}

app/modules/static/app.py

@@ -14,7 +14,6 @@ from app.models import User
 BLUEPRINT = Blueprint(
     "static",
     __name__,
-    template_folder="pages"
 )
 
 @BLUEPRINT.route("/", defaults={"page": "index"})