.t-store__prod-popup__btn {
  background-color: #16767c !important; /* ← твой цвет */
  border: 1px solid #000 !important;
  border-radius: 30px !important;
  color: #fff !important;
  box-shadow: 0px 10px 20px rgba(0,11,48,0.25);
}

.t-descr_xxs {
    font-size: 16px !important;
}

.t-name_md {
    font-size: 21px !important;
}

.t-btn_sm {
    height: 45px;
    font-size: 19px !important;
    padding-left: 30px;
    padding-right: 30px;
}