body {
    font-family: sans-serif;

    width: 796px;
    margin: 96px auto;
}

h1 {
    margin: 40px 0;
}

h2 {
    margin: 30px 0;
}

div {
    margin: 5px 0;
}

a {
    font-weight: bold;

    text-decoration: none;

    color: #2196f3;
}

ul {
    line-height: 30px;

    margin: 0;
    padding: 0 0 0 25px;
}

p {
    font-size: 16px;
    line-height: 22px;
}

p>code {
    font-family: monospace;
    font-weight: 600;

    color: #009688;
}

button {
    font-size: 16px;

    width: 140px;
    height: 32px;
}

select {
    font-size: 16px;

    width: 140px;
    height: 32px;
}

dt {
    padding: 5px 0 5px 0;
}

dd {
    margin-left: 0;
    padding: 5px 0 5px 0;
}

dd>input[type=range] {
    width: 320px;
}

.label {
    display: inline-block;
    text-align: center;

    width: 140px;
    height: 40px;
}

#footer {
    margin-top: 60px;
}