h1 {
    /* F:27-55; */
    font-size: clamp(27px, calc(27px + (28) * ((100vw - 320px) / (1680))), 55px);
}

h2 {
    /* F:25-40; */
    font-size: clamp(25px, calc(25px + (15) * ((100vw - 320px) / (1680))), 40px);
}

h3 {
    /* F:20-25; */
    font-size: clamp(20px, calc(20px + (5) * ((100vw - 320px) / (1680))), 25px);
}

h4 {
    /* F:13-20; */
    font-size: clamp(13px, calc(13px + (7) * ((100vw - 320px) / (1680))), 20px);
}

body {
    /* F:14-16; */
    font-size: clamp(14px, calc(14px + (2) * ((100vw - 320px) / (1680))), 16px);
}