#inputA_1 {
  width: 80px;
}

#btnMethod_1,
#btnClear_1 {
  width: 66px;
}

#labelText2 {
  margin-top: 18px;
}

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

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

  #selected2 {
    margin-left: 0px;
    margin-bottom: 0px;
  }
}