@media (max-width: 479px) {
  .t-submit {
    font-size: 10px !important;
  }
}

.t-btn_md {
    height: 50px;
    font-size: 12px;
}

.t-btn_md {
    height: 50px;
    font-size: 12px;
}

@media (max-width: 479px) {
  .t-btn_md {
    height: 45px !important;
    font-size: 10px !important;
  }
}