.guest-register-modal{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.65);
    z-index:99999;
    display:none;
    align-items:center;
    justify-content:center;
    padding:20px;
    box-sizing:border-box;
}

.guest-register-box{
    width:100%;
    max-width:420px;
    background:#fff;
    color:#111;
    border-radius:18px;
    padding:24px 20px;
    text-align:left;
    box-shadow:0 12px 40px rgba(0,0,0,.25);
    font-family:Arial, Helvetica, sans-serif;
}

.guest-register-box h3{
    margin:0 0 12px 0;
    font-size:26px;
    line-height:1.15;
}

.guest-register-box p{
    margin:0 0 18px 0;
    font-size:17px;
    line-height:1.5;
    color:#333;
}

.guest-register-arrow{
    text-align:center;
    font-size:42px;
    line-height:1;
    margin:8px 0 14px 0;
}

.guest-register-close{
    margin-top:10px;
    width:100%;
    padding:14px 18px;
    border:none;
    border-radius:12px;
    background:#111;
    color:#fff;
    font-size:17px;
    font-weight:700;
}