.fenster-konfigurator {
    border: 2px solid #ccc;
    padding: 20px;
    margin: 20px 0;
    background: #f9f9f9;
    border-radius: 8px;
}

.fenster-konfigurator label,
.fenster-konfigurator input,
.fenster-konfigurator select,
.fenster-konfigurator button {
    display: block;
    margin-bottom: 10px;
    width: 100%;
}

.fk-step {
    padding: 20px;
    background: #f0f0f0;
    border-radius: 8px;
}

.fk-navigation {
    margin-top: 20px;
    display: flex;
    justify-content: space-between;
}