/* Текст от 400px */
@media screen and (min-width: 400px) {
  .t-text_md {
    font-size: 16px !important;
    line-height: 1.55 !important;
  }

}

/* Текст до 399px */
@media screen and (max-width: 399px) {
  .t-text_md {
    font-size: 14px !important;
    line-height: 1.55 !important;
  }
}
</style>