body {
    margin:0;
    font-family:'proxima';
    height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
}

h1 {
    font-weight:lighter;
    font-family:'proxima_light';
    font-size:1.5em;
}

.big {
    font-family:'proxima_bold';
}