*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-size: 12px;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #333;
}