canvas {
    padding-left: 0;
    padding-right: 0;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 2em;
    display: block;
}

body {
    background-color: #757575;
    font-family: Arial;
}

h3 {
    text-align: center;
}

.bottom {
    text-align: center;
}

#title {
    padding-bottom: 0.5em;
}

footer {
    text-align: center;
    padding-top: 1em;
}