* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    background-color: #fafafa;
}

nav {
    background: #fff;
    width: 100%;
    height: 50px;
    box-shadow: 0px 2px 2px 2px rgba(0, 0, 0, 0.4);
    font-size: 24px;
    font-weight: bold;
    text-align: center;
}

#content {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 5px;
    background-color: #fff;
    border-radius: 2px;
    width: 95%;
    box-shadow: 0px 2px 2px 2px rgba(0, 0, 0, 0.4)
}

#content canvas {
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}