.ptqb-front-form{
    max-width:700px;
}

.ptqb-front-field{
    display:block;
    width:100%;
    margin-bottom:20px;
}

.ptqb-front-field label{
    display:block;
    margin-bottom:8px;
    font-weight:600;
}

.ptqb-front-field input[type=text],
.ptqb-front-field textarea{
    width:100%;
    max-width:500px;
}

.ptqb-front-field input[type=file]{
    display:block;
    margin-top:8px;
}

.ptqb-zalo-box{
    width:100%;
    text-align:center;
    margin-top:15px;
    clear:both;
}

.ptqb-zalo-button{
    display:inline-block;
    background:#0068ff;
    color:#fff;
    padding:12px 22px;
    border-radius:6px;
    text-decoration:none;
    font-weight:bold;
}