JSFiddle - React, Tailwind, and code Playground

HTML

<header>
            <nav>
                <div class="row">
                    <img src="resources/img/logo-white.png" alt="Omnifood logo" class="logo">
                    <ul class="main-nav">
                        <li><a href="#">Food delivery</a></li>
                        <li><a href="#">How it works</a></li>
                        <li><a href="#">Our cities</a></li>
                        <li><a href="#">Sign up</a></li>
                    </ul>
                </div>

            </nav>
            <div class="hero-text-box">
                <h1>Goodbye junk food.<br> Hello super healthy meals.</h1>
                <a class="btn btn-full" href="#">I'm hungry</a>
                <a class="btn btn-ghost"href="#">Show me more</a>
            </div>



        </header>

        <section class="section-features">
            <div class="row">
                <h2>Get food fast &mdash; not fast food.</h2> 
                <p class="long-copy">
                    Hello, we’re Omnifood, your new premium food delivery service. We know you’re always busy. No time for cooking. So let us take care of that, we’re really good at it, we promise!
                </p>
            </div>

            <div class="row">
                <div class="col span-1-of-4">
                    <h3>Up to 365 days/year</h3>
                    <p>
                        Never cook again! We really mean that. Our subscription plans include up to 365 days/year coverage. You can also choose to order more flexibly if that's your style.
                    </p>
                </div>
                <div class="col span-1-of-4">
                    <h3>Ready in 20 minutes</h3>
                    <p>
                        You're only twenty minutes away from your delicious and super healthy meals delivered right to your home. We work with the best chefs in each town to ensure that you're 100% happy.
                    </p>
                </div>
                <div class="col...

CSS

*{
    margin: 0;
    padding: 0;
    box-sizing:  border-box;
}

html{
    background-color: #fff;
    color: #555;
    font-family :"Lato",'Arial',sans-serif;
    font-weight: 300;
    font-size: 20px;
    text-rendering: optimizeLegibility;
}


/* ------------------------------------*/
/* REUSABLE COMPONENTS*/
/* ------------------------------------*/




.row{
    max-width: 1140px;
    margin: 0 auto

}

/* --------HEADINGS--------*/


h1{
    margin-top:0;
    margin-bottom: 20px;
    color: #fff;
    font-size: 240%;
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing:  1px;
    word-spacing: 4px

} 


/* --------BUTTONS--------*/

.btn:link,
.btn:visited{
    padding: 10px 30px;
    display: inline-block;
    font-weight: 300;   
    text-decoration: :none;
    border-radius:200px;
    transition:background-color 0.2s, border 0.2s, color 0.2s;
}

.btn-full:link,
.btn-full:visited{
    background-color: #e67e22;
    border: 1px solid #e67e22;
    color:#fff;
    margin-right: 15px;

}
.btn-ghost:link,
.btn-ghost:visited{
    border: 1px solid #e67e22;
    color:#e67e22;

}
.btn:hover,
.btn:active{
    background-color: #cf6d17;
}

.btn-full:hover,
.btn-full:active{
    border: 1px solid #cf6d17;
}
.btn-ghost:hover,
.btn-ghost:active{
    border: 1px solid #cf6d17;
    color:#fff;}



/* ------------------------------------*/
/* HEADE*/
/* ------------------------------------*/



header{
    background-image: linear-gradient(rgba(0, 0, 0, 0.7),rgba(0, 0, 0, 0.7)),url(img/hero.jpg);
    background-size: cover;
    background-position: center;
    height: 100vh
}

.hero-text-box{
    position:absolute;
    width: 1140px;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}    

.logo{
    height: 100px;
    width: auto;
    float: left;
    margin-top: 20px;

}

.main-nav{
    float: right;
    list-style: none;
}

.main-nav li{
    display: inline-block;
    margin-left: 40px;
    margin-top: 55px;
}

.main-nav li...