select {
  box-sizing: border-box;
  padding-left: 37px;
  height: 60px;
}

select[name=bday-year] {
  width: 200px;
  padding-left: 39px;
}

select[name=bday-month],
select[name=bday-day] {
  width: 120px;
  padding-left: 35px;
  margin-left: 15px;
}

select[name=bday-year],
select[name=bday-month],
select[name=bday-day] {
  -moz-appearance: none;
  /* Firefox */
  -webkit-appearance: none;
  /* Safari and Chrome */
  appearance: none;
  cursor: pointer;
  position: relative;
  background-image: url(../images/arrow.png);
  background-size: 28px 14px;
  background-repeat: no-repeat;
  background-position: 93% 22px;
  background-color: white;
}

.send form {
  width: 100%;
}

button.submit-btn.btn.submit-form-btn:disabled {
  background: #c8c8c8;
}