style.css

html {
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 
                'Lucida Sans', Arial, sans-serif;
    background-color: gray;
}

body {
    width: 100%;
    max-width: 1366px;
    margin: 0 auto;
    background-color: white;
/* The body content has a max-width - In viewports above that width the body
remains at 1366px and centers itself in the available space. In viewports below
that width, the body will stay at 100% of the width of the viewport */
}

header {
    background: url(static/header1.jpg) no-repeat center;
    height: 300px;
}

section {
    padding: 20px;
}

p {
    line-height: 1.5;
}

img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
}