JSFiddle - React, Tailwind, and code Playground

HTML

<form action="verify.php" method="post">
    User Name:<br>
    <input type="text" class="login" name="username" /><br><br>
    Password:<br>
    <input type="password" class="login" name="password" /><br><br>
    <div align="center"><input type="submit" name="submit" value="Login" /></div>
</form>

CSS

/* Apply Grey background to all inputs */
input {
   background-color: #CCC;
}

/* Apply red background to input field named username */
input[name="username"] {
    background-color: red;
}