.main_form {
    padding: 40px;
    box-shadow: 0px 15px 15px 0px rgba(50, 50, 50, 0.1);
    border-radius: 7px;
}

.main_form .form_message {text-align: center; margin: 5px 0 30px 0;}
.main_form .form_field {width: 45%; float: left; margin-right: 2%;}

/*.col-xl-  (>= 1200px)*/
@media screen and (min-width: 1200px)
{
       
}
/*.col-lg-  (>= 992px)*/
@media screen and (max-width: 1200px)
{
     
}
/*.col-md-  (>= 768px)*/
@media screen and (max-width: 991px)
{
    
}
/*.col-sm-  (>= 576px)*/
@media screen and (max-width: 767px)
{
    .main_form {background: #f8f9fb!important; padding: 20px;}
    .main_form .form_field {width: 48%; margin-right: 0; margin: 0 1%;}
    
}
/*.col-*/
@media screen and (max-width: 575px)
{
    
}