Untitled

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4">
    <head>
        <title>Login</title>
        <!-- Bootstrap core CSS -->
        <link th:href="@{/css/bootstrap.min.css}" rel="stylesheet"></link>
        <link th:href="@{/css/main.css}" rel="stylesheet"></link>
    </head>

    <body class="form-container">
        <form th:action="@{/login}" method="post">
            <h1 class="h3 mb-3 font-weight-normal">Please sign in</h1>

            <div th:if="${param.error}">
                <div class="alert alert-danger">
                    Invalid username and password.
                </div>
            </div>
            <div th:if="${param.logout}">
                <div class="alert alert-info">
                    You have been logged out.
                </div>
            </div>

            <div class="form-group">
                <label for="inputEmail" class="sr-only">Username</label>
                <input type="username" id="username" name="username" class="form-control" placeholder="Username" required="true" autofocus="true"></input>
            </div>
            <div class="form-group">
                <label for="inputPassword" class="sr-only">Password</label>
                <input type="password" id="password" name="password" class="form-control" placeholder="Password" required="true"></input>
            </div>
            <div class="form-group">
                <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
            </div>
            <p class="mt-5 mb-3 text-muted">&copy; 2017-2018</p>
        </form>
    </body>
</html>