body {
    color: #454545;
}

header {
    font-family: "source-sans-pro",sans-serif;
    font-style: normal;
    font-weight: 300;
    text-align: center;
    margin: 3em 0 0 0;
}

header h1 {
    font-family: "source-sans-pro",sans-serif;
    font-style: normal;
    font-weight: 600;
    font-size: 5em;
    margin: 0;
    padding: 0;
    letter-spacing: -0.05em;
    text-align: center;
    text-rendering: optimizeLegibility;
}

@media only screen and (min-width: 920px) {
    header {
        margin-top: 6em;
    }

    header h1 {
        font-size: 5.4em;
    }
}