@media (max-width: 1199px) { 

}
@media (max-width: 991px) { 

}
@media (max-width: 767px) { 
    .form_boxbase { width: 100%;} 
    .headtitle, .company_address { text-align: center;} 
}
@media (max-width: 575px) { 

}
@media (max-width: 480px) { 
    .form_boxbase { max-width: 100%; padding: 20px 20px 30px 20px; }
    .headtitle { font-size: 20px; }
    .company_address { font-size: 14px; }
    .btn_groupbox { display: block; }
    .btn_groupbox button { width: 100%; display: block; margin: 15px 0;} 
}