body {
    display: flex;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    padding: 28px 16px;
}

.container { height: auto; }

.form-signin {
    max-width: 420px;
    padding: 34px;
    margin: 0 auto;
    background: #fff;
    border: 1px solid #dfe7e2;
    border-radius: 18px;
    box-shadow: 0 18px 55px rgba(18,60,36,.14);
}

.login-logo {
    display: block;
    width: 200px;
    max-width: 100%;
    height: auto;
    margin: 0 0 22px;
}

.form-signin .form-signin-heading {
    margin: 5px 0 8px;
    color: #17211b;
    font-size: 26px;
    font-weight: 750;
    line-height: 1.2;
}

.login-intro { margin: 0 0 24px; color: #68746d; }

.form-signin .form-control {
    height: 48px;
    margin-bottom: 13px;
    padding: 11px 13px;
    font-size: 16px;
    border-radius: 10px !important;
}

.form-signin .btn { min-height: 48px; margin-top: 8px; }