JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
            <section class="main">
                <form class="form-3">
                    <p class="clearfix">
                        <label for="login">Username</label>
                        <input type="text" name="login" id="login" placeholder="Username">
                    </p>
                    <p class="clearfix">
                        <label for="password">Password</label>
                        <input type="password" name="password" id="password" placeholder="Password"> 
                    </p>
                    <p class="clearfix">
                        <input type="checkbox" name="remember" id="remember">
                        <label for="remember">Remember me</label>
                    </p>
                    <p class="clearfix">
                       <input type="submit" name="submit" value="Sign in">
                    </p>       
                    <p class="clearfix">
                       <input type="submit" name="submit" value="Sign in">
                    </p>                          
                </form>
            </section>
            
        </div>

CSS

@import url(http://fonts.googleapis.com/css?family=Ubuntu:400,700);
            body {
                
                -webkit-background-size: cover;
                -moz-background-size: cover;
                background-size: cover;
            }
            .container > header h1,
            .container > header h2 {
                color: #fff;
                text-shadow: 0 1px 1px rgba(0,0,0,0.7);
            }

*,
*:after,
*:before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
    -o-box-sizing: border-box;
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

.clearfix:after {
    content: "";
    display: table;
    clear: both;
}
html { height: 100%; }

body {
    font-family: 'Lato', Calibri, Arial, sans-serif;
    background: #ddd url(../images/bg.jpg) repeat top left;
    font-weight: 300;
    font-size: 15px;
    color: #333;
    -webkit-font-smoothing: antialiased;
    overflow-y: scroll;
    overflow-x: hidden;
}

a {
    color: #555;
    text-decoration: none;
}

.container {
    width: 100%;
    position: relative;
}

.clr {
    clear: both;
    padding: 0;
    height: 0;
    margin: 0;
}

.main {
    width: 90%;
    margin: 0 auto;
    position: relative;
}

.container > header {
    margin: 10px;
    padding: 20px 10px 10px 10px;
    position: relative;
    display: block;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.2);
    text-align: center;
}

.container > header h1 {
    font-size: 30px;
    line-height: 38px;
    margin: 0;
    position: relative;
    font-weight: 300;
    color: #666;
    text-shadow: 0 1px 1px rgba(255,255,255,0.6);
}

.container > header h2 {
    font-size: 14px;
    font-weight: 300;
    margin: 0;
    padding: 15px 0 5px 0;
    color: #666;
    font-family: Cambria, Georgia, serif;
    font-style: italic;
    text-shadow: 0 1px 1px rgba(255,255,255,0.6);
}
.form-3 {
    font-family: 'Ubuntu', 'Lato', sans-serif;
    font-weight: 400;
    /* Size and...