JSFiddle - React, Tailwind, and code Playground

HTML

<section class="feedback_form">
    <form action="" method="post">
        <fieldset>
            <label>Name:</label>
            <input type="text" name="name" id="name">
        </fieldset>
        <fieldset>
            <label>Company Name:</label>
            <input type="text" name="company_name">
        </fieldset>
        <fieldset>
            <label>City:</label>
            <input type="text" name="city">
        </fieldset>
        <fieldset>
            <label>Zip:</label>
            <input type="text" name="zip">
        </fieldset>
        <fieldset>
            <label>Phone*:</label>
            <input type="tel" required="" name="phone">
        </fieldset>
        <fieldset>
            <label>Email Address*:</label>
            <input type="email" required="" name="email">
        </fieldset>
    </form>
</section>

CSS

.feedback_form {
    margin: 15px 0 0 0;
}
.feedback_form label {
    display: block;
}
.feedback_form input, .feedback_form select, .feedback_form textarea {
    width: 95%;
}
.feedback_form input[type=submit], .feedback_form input[type=reset] {
    width: auto;
}
fieldset {
    border: 0;
    padding:0 0 10px 0;
}
@media screen and (min-width:768px) {
    .feedback_form {
        width:80%;
        margin:0 auto;
    }
    .feedback_form label {
        width: 45%;
        display: inline-block;
        vertical-align: top;
        font-weight:normal;
    }
    .feedback_form input, .feedback_form select, .feedback_form textarea {
        width: 50%;
    }
    .feedback_form input[type=submit], .feedback_form input[type=reset] {
        margin-right: 10px;
        padding: 5px;
    }
}