Updated game

templates/login.html

@@ -55,7 +55,7 @@
         <form action="{{ url_for('handle_login') }}" method="POST" class="input-form">
             <div class="form-group">
                 <label for="player_identifier" class="input-label">ID</label>
-                <input type="text" id="player_identifier" name="player_identifier" class="text-input" pattern="[A-Za-z]{{ '{' }}{{ identifier_length }}{{ '}' }}" required>
+                <input type="text" id="player_identifier" name="player_identifier" class="text-input" style="text-transform: uppercase;" maxlength="{{ identifier_length }}" oninput="this.value = this.value.replace(/[^a-zA-Z]/g, '').toUpperCase().slice(0, {{ identifier_length }});" pattern="[A-Za-z]{{ '{' }}{{ identifier_length }}{{ '}' }}" required>
             </div>
             <div class="form-group">
                 <label for="password_string" class="input-label">Passwort</label>