.mspf-step { display: none; }
.mspf-step:first-child { display: block; }

.mspf-popup-overlay {
    display: none;
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); z-index: 9998;
}
.mspf-popup-content {
    display: none;
    position: fixed; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    background: #fff; padding: 20px;
    z-index: 9999;
}