html {
    font-size: 1rem;
    font-family: Arial, Helvetica, sans-serif;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

*,
*::before,
*::after {
    -webkit-box-sizing: inherit;
    box-sizing: inherit;
}

body {
    margin: 0;
}