#btnMethod_1 {
  width: 150px;
}

#btnClear_1 {
  width: 66px;
}

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

  #btnMethod_1,
  #btnClear_1 {
    text-align: center;
    margin-bottom: 14px;
  }

  #syntax_1 {
    padding-bottom: 0px;
  }
}