body, ul, h1, h2, h3, p, dl, dd, dt, button {
    margin: 0;
    padding: 0;
    list-style: none;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, Ubuntu, sans-serif;
}
body {
    font: 14px/1.5;
    background-color: #f4f4f4;
    color: #4a4a4a;
    -webkit-user-select: none;
}
html, body {
    -webkit-text-size-adjust: 100%;
}