#inputB_1 {
  width: 70px;
  height: auto;
  font-size: 14px;
  background-color: transparent;
  color: var(--dark);
  margin: 0;
  text-align: center;
}

#btnMethod_1,
#btnMethod_2 {
  width: 110px;
}

#btnClear_1,
#btnClear_2 {
  width: 66px;
}

/* *************** 640px *************** */
@media only screen and (max-width: 640px) {

  .selectParams {
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
    text-align: center;
  }

  #inputB_1 {
    height: 26px;
  }
}