JSFiddle - React, Tailwind, and code Playground

HTML

<input    placeholder='hello' class="inputclass"> The placholder text should be red<br>
<textarea placeholder='hello'></textarea>

CSS

/* do not group these rules */
*::-webkit-input-placeholder {
  color: red;
}
*:-moz-placeholder {
  color: red;
}
*:-ms-input-placeholder { /* IE10+ */
  color: red;
}

.inputclass{
    color: black;
}