* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-size: 62.5%;
    scroll-behavior: smooth;
    font-family: futura-pt, futura-pt-bold, futura-pt-condensed, kozuka-gothic-pr6n, sans-serif;
}
a {
    color: #444;
    text-decoration: none;
}
main {
    position: relative;

    background: #fff;
}
.bg {
    position: fixed;
    width: 100vw;
    height: 100vh;
}
.bg img {
    width: 100%;
    height: 100%;
}