/* WebKit browsers */
input:focus::-webkit-input-placeholder,
textarea:focus::-webkit-input-placeholder {
  color: transparent;
} /* Mozilla Firefox 4 to 18 */
input:focus:-moz-placeholder,
textarea:focus:-moz-placeholder {
  color: transparent;
}
/* Mozilla Firefox 19+ */
input:focus::-moz-placeholder,
textarea:focus::-moz-placeholder {
  color: transparent;
}
/* Internet Explorer 10+ */
input:focus:-ms-input-placeholder,
textarea:focus:-ms-input-placeholder {
  color: transparent;
}