::placeholder { /* Chrome, Firefox, Opera, Safari 10.1+ */
    color: white;
    opacity: 0.5; /* Firefox */
  }
  
  :-ms-input-placeholder { /* Internet Explorer 10-11 */
    color: white;
    opacity: 0.5;
  }
  
  ::-ms-input-placeholder { /* Microsoft Edge */
    color: white;
    opacity: 0.5;
  }

.header form input::-webkit-search-cancel-button{
    -webkit-appearance: none;
}

.header form input::-ms-clear{
    -webkit-appearance: none;
 }