@import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro:300);

html {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    margin: 0;
}

body {
    background-color: #292929;
    color: #ffffff;
}

header > h1 {
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 4.5em;
    font-weight: 300;
    letter-spacing: -0.025em;
}