JSFiddle - React, Tailwind, and code Playground

HTML

<div style="background: #000;height: 60px;position: fixed;  padding: 0 10px;width: 96%;z-index: 9999;" id="header-wrap">
    <header class="center">
        
<h1 id="logo">
<a href="/">My App</a>
</h1>

        
<h2 class="mob-usrname" style="display:none;">Mark</h2>

    </header>
</div>
<section id="main" class="tabs">
    <div class="page-wrap">

          <br> <br><br>
<h2>Register</h2>
 
        <form class="form" method="post">
            <p>
                <label for="id_first_name">First name</label>
                <input id="id_first_name" class="textinput" type="text" maxlength="30" value="Dan" name="first_name">
<span class="helptext"></span>

            </p>
            <p>
                <label for="id_last_name">Last name</label>
                <input id="id_last_name" class="textinput" type="text" maxlength="30" value="Hibma" name="last_name">
<span class="helptext"></span>

            </p>
            <p>
                <label for="id_email">E-mail address</label>
                <input id="id_email" class="textinput" type="text" maxlength="75" value="[email protected]" name="email">
<span class="helptext"></span>

            </p>
            <p>
                <label for="id_password1">Password</label>
                <input id="id_password1" class="textinput" type="password" name="password1">
<span class="helptext"></span>

            </p>
            <p>
                <label for="id_password2">Password Confirmation</label>
                <input id="id_password2" class="textinput" type="password" name="password2">
<span class="helptext">Enter the same password as above, for verification.</span>

            </p>
            <p>
                <label for="id_phone">Phone</label>
                <input id="id_phone" class="textinput" type="text" maxlength="20" value="257-635-4735" name="phone">
<span class="helptext"></span>

            </p>
            <p>
                <label for="id_button">Button</label>
                <input...

CSS

body{
    margin: 0;
}