diff --git a/include/class-PageLogin.php b/include/class-PageLogin.php
index 7aa1fee..14a0ffa 100644
--- a/include/class-PageLogin.php
+++ b/include/class-PageLogin.php
@@ -1,31 +1,48 @@
 <?php
 /**
  * Login page of my website
  */
 class PageLogin extends Page {
 
 	/**
 	 * Do something at startup
 	 *
 	 * @override
 	 */
 	protected function prepare() {
 
-		// eventually go to the homepage
-		if( is_logged() ) {
-			http_redirect( '' );
-		}
-
 		// set the page title
 		$this->setTitle( __( "Login" ) );
 
 		// check if we should do the login
-		if( is_action( 'do-login' ) ) {
+		if( $this->isLoginFormSubmitted() ) {
 
-			// process the login form
+			// process the user_uid and the user_password sent via POST
 			login();
 		}
 
+		// eventually go to the homepage if logged-in
+		if( is_logged() ) {
+			http_redirect( '', 303 );
+		}
+	}
+
+	/**
+	 * Check if the login form was submitted
+	 *
+	 * @return boolean
+	 */
+	public function isLoginFormSubmitted() {
+		return is_action( 'do-login' );
+	}
+
+	/**
+	 * Check if the login failed
+	 *
+	 * @return boolean
+	 */
+	public function isLoginFormFailed() {
+		return $this->isLoginFormSubmitted() && !is_logged();
 	}
 
 }
diff --git a/www/login.php b/www/login.php
index bafab2d..6e5bb2a 100644
--- a/www/login.php
+++ b/www/login.php
@@ -1,36 +1,44 @@
 <?php
 // load everything
 require '../load.php';
 
 // this is the homepage (the business logic of this page it's in this class)
 $page = new PageLogin();
 
 // print site header
 $page->printHeader();
 ?>
 
+	<!-- login failed warning -->
+	<?php if( $page->isLoginFormSubmitted() ): ?>
+		<div class="card-panel">
+			<p><?= __( "Login failed!" ) ?></p>
+		</div>
+	<?php endif ?>
+
+	<!-- login form -->
 	<form method="post">
 
 		<?php form_action( 'do-login' ) ?>
 
 		<!-- username -->
 		<p>
 			<label for="user-uid"><?= esc_html( __( "Username" ) ) ?></label>
 			<br />
-			<input id="user-uid" name="user_uid" />
+			<input type="text" id="user-uid" name="user_uid" />
 		</p>
 
 		<!-- password -->
 		<p>
 			<label for="user-pwd"><?= esc_html( __( "Password" ) ) ?></label>
 			<br />
-			<input id="user-pwd" name="user_password" />
+			<input type="password" id="user-pwd" name="user_password" />
 		</p>
 
 		<!-- submit button -->
 		<p><button><?= esc_html( __( "Login" ) ) ?></button></p>
 
 	</form>
 
 <?php
 $page->printFooter();