body, html {
    height: 100%;
    background-color: #f8f9fa;
}

.main-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.content-wrapper {
    max-width: 480px;
    width: 100%;
    padding: 2rem;
}

.form-step {
    display: none;
}

.form-step.active {
    display: block;
}

.progress {
    height: 4px;
}

.progress-bar {
    background-color: #212529;
}

.btn-dark {
    background-color: #212529;
    border-color: #212529;
}

.list-group-item.active {
    background-color: #212529;
    border-color: #212529;
}