body {
    background: #f0f2f5;
}

.login-card {
    max-width: 420px;
    margin: 40px auto;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,.10);
}

.login-header {
    background: #212529;
    color: #fff;
    border-radius: 12px 12px 0 0;
    padding: 24px;
    text-align: center;
}

    .login-header img {
        height: 48px;
        margin-bottom: 8px;
    }