.form_builder {
    /*background: #fff;*/
    padding: 20px;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
    max-width: 600px;
    margin:auto ;
}
.form_builder .label-title {    
    font-size: 14px;
    font-weight: 600;
    color: #555;
    padding-bottom: 5px;
    display: block;
}
.form_builder .captcha_builder .captcha_div_build {
    float: left;
}
.form_builder .captcha_builder .btn {
    float: right;
}
@media (max-width:568px){
    .form_builder {
        padding:12px;
    }    
    .form_builder .captcha_builder .captcha_div_build {
        float: none;
    }
    .form_builder .captcha_builder .btn {
        float: none;
    }
}