JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" placeholder="First Name"/>

CSS

::-webkit-input-placeholder {
   color: red;
}

:-moz-placeholder { 
   color: red;  
}

::-moz-placeholder {  
   color: red;  
}

:-ms-input-placeholder {  
   color: red;  
}

input{
    color: blue;
}