.gform_wrapper.gf_browser_chrome .gform_body select{
    padding:0 6px;
}

@media screen and (max-width: 480px) {
   .container,
   .main-side-left .container,
   .pix-container,
   .main-side-right .container {
       max-width: 98% !important; /* ou 100%, 95%, etc. */
   }
}