<div class="loginForm">
<div class="loginMessage">[[+errors]]</div>
<div class="loginLogin">
<form class="loginLoginForm" action="[[~[[*id]]]]" method="post">
<fieldset class="loginLoginFieldset">
<legend class="loginLegend">[[+actionMsg]]</legend>
<label class="loginUsernameLabel">[[%login.username]]
<input class="loginUsername" type="text" name="username" />
</label>
<label class="loginPasswordLabel">[[%login.password]]
<input class="loginPassword" type="password" name="password" />
</label>
<input class="returnUrl" type="hidden" name="returnUrl" value="[[+request_uri]]" />
[[+login.recaptcha_html]]
<input class="loginLoginValue" type="hidden" name="service" value="login" />
<span class="loginLoginButton"><input type="submit" name="Login" value="[[+actionMsg]]" /></span>
</fieldset>
</form>
</div>
</div>
<div class="container">
<div class="row">
<p class="text-center"><a href="#" class="btn btn-primary btn-lg" role="button" data-toggle="modal" data-target="#login-modal">Login</a></p>
</div>
</div>
<!-- BEGIN # MODAL LOGIN -->
<div class="modal fade" id="login-modal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true" style="display: none;">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header" align="center">
<img class="img-circle" id="chor_logo" src="28M8b7qs6A/components/pic/Notenlogo.jpg">
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span class="glyphicon glyphicon-remove" aria-hidden="true"></span>
</button>
</div>
<!-- Begin # DIV Form -->
<div id="div-forms">
<!-- Begin # Login Form -->
<form id="loginLoginForm" action="[[~[[*id]]]]" method="post">
<div class="modal-body loginLogin">
<div id="div-login-msg loginMessage">
[[+errors]]
</div>
<input id="loginUsername" class="loginUsername form-control" name="username" type="text" placeholder="Benutzername" required>
<input id="loginPassword" class="loginPassword form-control" type="password" placeholder="Passwort" required>
<input class="returnUrl" type="hidden" name="returnUrl" value="[[+request_uri]]" />
[[+login.recaptcha_html]]
<input class="loginLoginValue" type="hidden" name="service" value="login" />
</div>
<div class="modal-footer">
<div>
<button type="submit" class="loginLoginButton btn btn-primary btn-lg btn-block" value="[[+actionMsg]]">Login</button>
</div>
<div>
<a href="[[~68]]" id="login_lost_btn" type="button" class="btn btn-link">Passwort vergessen?</button>
</div>
</div>
</form>
<!-- End # Login Form -->
</div>
<!-- End # DIV Form -->
</div>
</div>
</div>
<!-- END # MODAL LOGIN -->
This question has been answered by yuliyepes. See the first response.
<input id="loginPassword" name="password" class="loginPassword form-control" type="password" placeholder="Passwort" required>
<button type="submit" name="login" class="loginLoginButton btn btn-primary btn-lg btn-block" value="[[+actionMsg]]">Login</button>