.form-control::placeholder {
	opacity: 0.3;
}

::placeholder { /* Chrome, Firefox, Opera, Safari 10.1+ */
  opacity: 0.5;
  opacity: 0.5; /* Firefox */
}

:-ms-input-placeholder { /* Internet Explorer 10-11 */
  opacity: 0.5;
}

::-ms-input-placeholder { /* Microsoft Edge */
  opacity: 0.5;
}