style.css

body {
    margin: auto;
    min-width: 450px;
    /* slightly bigger than the canvas*/
    width: 75%;
    background-color: whitesmoke;
    font-family: Arial, Helvetica, sans-serif;
}


/* Style the header bar */

.header {
    overflow: hidden;
    background-color: #333;
    color: white;
    text-align: center;
}


/* Style the header links */

.header a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}


/* Change color on hover */

.header a:hover {
    background-color: #ddd;
    color: black;
}


/* Style the content */

.content {
    background-color: #ddd;
    padding: 10px;
    text-align: left;
    text-justify: distribute;
}

h1 {
    text-align: center;
}

.instrumentHolder {
    text-align: center;
    position: relative;
    margin: 0 auto;
}

/* Style the footer */

.footer {
    background-color: white;
    padding: 25px;
    text-align: center;
}

.footer a:hover {
    color: white;
}