JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" size="40" placeholder="eg. John Bond">

CSS

::-webkit-input-placeholder {
    color: #FF0000;
}

:-moz-placeholder { /* Firefox 18- */
    color: #FF0000;
}

::-moz-placeholder {  /* Firefox 19+ */
    color: #FF0000;
}

:-ms-input-placeholder {  
   color: #FF0000;
}