:root {
    font-size: 12px;
}

* {
    box-sizing: border-box;
}

body {
    background-color: rgb(255, 255, 255);
    color: rgb(0, 0, 0);
}

a {
    text-decoration: none;
    font-weight: bold;
    color: darkblue;
}

a:hover {
    text-decoration: underline;
}

main {
    padding: 2%;
    font-size: 2.3rem;
}

header, footer {
    margin: auto;
    text-align: center;
}

@media screen and (min-device-width:850px) {

    main {
        padding: 2%;
        font-size: 1.3rem;
    }
    
}