element.style {
    font-family: "Helvetica Neue", "Lucida Grande", sans-serif;
    font-size: 75%;
}
.offline {
    transition: -webkit-filter 1.5s cubic-bezier(0.65, 0.05, 0.36, 1), background-color 1.5s cubic-bezier(0.65, 0.05, 0.36, 1);
    will-change: -webkit-filter, background-color;
}
body {
    background-color: #f7f7f7;
    color: #646464;
}
user agent stylesheet
body {
    display: block;
    margin: 8px;
}
Inherited from html
html {
    -webkit-text-size-adjust: 100%;
    font-size: 125%;
}