@font-face {
    font-family: 'Avenir';
    src: url('Avenir Heavy.otf');
    src: url('Avenir Heavy.otf') format('opentype'),
         url('Avenir Heavy.woff2') format('woff2'),
         url('Avenir Heavy.woff') format('woff'),
         url('Avenir Heavy.ttf') format('truetype');
    font-weight: bold;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Avenir';
    src: url('Avenir Black.otf');
    src: url('Avenir Black.otf') format('opentype'),
         url('Avenir Black.woff2') format('woff2'),
         url('Avenir Black.woff') format('woff'),
         url('Avenir Black.ttf') format('truetype');
    font-weight: 900;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Avenir';
    src: url('Avenir Black.otf');
    src: url('Avenir Black.otf') format('opentype'),
         url('Avenir Black.woff2') format('woff2'),
         url('Avenir Black.woff') format('woff'),
         url('Avenir Black.ttf') format('truetype');
    font-weight: 800;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Avenir';
    src: url('Avenir Heavy.otf');
    src: url('Avenir Heavy.otf') format('opentype'),
         url('Avenir Heavy.woff2') format('woff2'),
         url('Avenir Heavy.woff') format('woff'),
         url('Avenir Heavy.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Avenir';
    src: url('Avenir Heavy.otf');
    src: url('Avenir Heavy.otf') format('opentype'),
         url('Avenir Heavy.woff2') format('woff2'),
         url('Avenir Heavy.woff') format('woff'),
         url('Avenir Heavy.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Avenir';
    src: url('Avenir Heavy.otf');
    src: url('Avenir Heavy.otf') format('opentype'),
         url('Avenir Heavy.woff2') format('woff2'),
         url('Avenir Heavy.woff') format('woff'),
         url('Avenir Heavy.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Avenir';
    src: url('Avenir Heavy.otf');
    src: url('Avenir Heavy.otf') format('opentype'),
         url('Avenir Heavy.woff2') format('woff2'),
         url('Avenir Heavy.woff') format('woff'),
         url('Avenir Heavy.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Avenir';
    src: url('Avenir Heavy.otf');
    src: url('Avenir Heavy.otf') format('opentype'),
         url('Avenir Heavy.woff2') format('woff2'),
         url('Avenir Heavy.woff') format('woff'),
         url('Avenir Heavy.ttf') format('truetype');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}