style.css

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background-color: #ddd;
}

section {
    background-color: #ddd;
}

h1 {
    margin: 0;
    font-family: 'Roboto';
    text-align: center;
    font-weight: bold;
    padding: 25px;
}

.food {
    width: auto;
}

.row {
    overflow: auto;
}

.column {
    float: left;
    padding: 0 4px;
    width: 33.3%;
}

.column-inner {
    padding: 20px;
}

.food img {
    width: 100%;
    padding: 20px;
}

h3 {
    text-align: center;
    font-weight: bold;
    font-family: 'Roboto';
    margin-bottom: 5px;
    font-size: 18px;
}

nav li {
    display: inline-block;
}

nav {
    background-color: #333333;
    position: fixed;
    width: 100%;
    top: 0;
}

nav ul {
    text-align: center;
    margin: 0;
}

nav li a {
    line-height: 50px;
    text-decoration: none;
    color: #999;
    font-size: 11px;
    text-transform: uppercase;
    font-weight: bold;
    padding: 0 18px;
    font-family: 'Roboto', sans-serif;
}

.hero {
    background: url(http://www.elevationacademy.co/wp-content/uploads/2016/02/Tel-Aviv.jpg) no-repeat center fixed;
    background-size: cover;
    height: 700px;
}

.hero-image {
    width: 100%;
    max-width: 500px;
    display: block;
    margin: 100 auto 0 auto;
}