Creating a Simple Web Page

<div id="header">

    <h1>Hello World</h1>

    <p>Whoa, we've just created a web page!</p>

</div>

body{

    font-family: sans-serif;

    background: url('http://wallpapercave.com/wp/sW4JXl5.jpg');

    background-size: cover;

    width: 100%;

    margin: 0 auto;

}

#header{

    width: 60%;

    margin: 0 auto;

    text-align: center;

    color: #fff;

}