JSFiddle - React, Tailwind, and code Playground

HTML

<body>
        <header>
            <a id = "logo" href = "#">Header Header Header Head</a>
        </header>
        <div id= "colourblock"></div>
        <nav>
          <a href="#">Home</a>
        </nav>
        <div id=wrapper>
            <section id="entry"><h1>~</h1></section>
            <section id="entry"><h1>~</h1></section>
            <section id="entry"><h1>~</h1></section>
        </div>
    </body>

CSS

body{
    margin: 0;
    background-image: url(res/45-degree-fabric-dark.png);
}
header{
    position:absolute;
    top: 0;
    width: 100%;
    padding-left: 24px;
    padding-right: 24px;
    background-image: url(res/7029266031_6d17f2bca7_z.jpg);
    background-position: center;
    color:#fff;
    border-bottom: 5px solid rgba(0, 0, 0, 0.5);
    z-index: 50;
    height: 80px;
    opacity: 1;
    overflow: hidden;
}
#logo{
    position: absolute;
    top: 30px;
    font-family:Arial, Helvetica, sans-serif;
    font-size: 20px;
    text-shadow: 2px 2px rgba(0, 0, 0, 0.5);
    font-weight:bold;
    display: block;
    color:#fff;
    text-decoration: none;
    margin: auto;
}
#colourblock{
    top: 0;
    position: absolute;
    height: 85px;
    width: 100%;
    background: rgba(0, 0, 0, 0.5);
}
nav{
    margin-top: 85px;
    height: 30px;
    opacity: 1;
    line-height: 30px;
    text-align: center;
    font-family:Arial, Helvetica, sans-serif;
    font-size: 16px;
    text-shadow: 2px 2px rgba(0, 0, 0, 0.5);
    color:#fff;
    display: block;
    background: rgba(0, 0, 0, 0.5);
}
nav a{
    text-decoration: none;
    color:#fff;
}
nav a:hover{
    text-decoration: underline;
}
section{
    height:10px;
    min-height: 400px;
    background: rgba(0, 0, 0, 0.5);
    border-bottom: 5px solid rgba(0, 0, 0, 0.5);
}
section h1{
    font-family:Arial, Helvetica, sans-serif;
    font-size:2em;
    text-align:center;
}
#wrapper{
    padding: 10px;
}