html,
body {
    height: 100%;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.form-signin {
    max-width: 480px;
    padding: 1rem;
}

.footer {
    /*display:block;*/
    margin-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
    color: #6c757d;
}