#music-explanation {
    margin: 40px;
    width: 900px;
}

#music-explanation ol {
    list-style: decimal inside none;
    padding: 1em 0 0 1em;
}

#music-explanation li {
    float: none;
    height: 45px;
}

#music-explanation li object {
    padding-left: 1em;
}