styles.css

* {
    box-sizing: border-box;
}

html,
body {
    background: #000;
    color: #fff;
    font-family: "Source Sans Pro", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 400;
    border: 0;
    height: 100%;
    width: 100%;
    text-align: center;
    display: -webkit-flex;
    -webkit-justify-content: center;
    -webkit-align-items: center;
}

#weather_data {
    display: -webkit-flex;
    -webkit-flex: 1;
    -webkit-flex-flow: wrap;
    -webkit-align-items: center;
}

#weather_chart {
    min-height: 90%;
    -webkit-flex: 3;
}

#weather_data dt,
#weather_data dd {
    margin: 0;
    -webkit-flex: 1 50%;
}

#weather_data dt {
    padding-right: 3%;
    color: #666;
    font-size: 36px;
    font-weight: 300;
    text-align: right;
    -webkit-flex: 1 33%;
}

#weather_data dd {
    padding-left: 3%;
    font-size: 96px;
    font-weight: 600;
    text-align: left;
}

#weather_data dt:first-of-type,
#weather_data dd:first-of-type {
    padding: 0;
    text-align: center;
    text-indent: 0;
    -webkit-flex: 0 100%;
}

#weather_data dt:first-of-type {
    font-size: 36px;
}

#weather_data dd:first-of-type {
    font-size: 144px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 40px;
}

#weather_condition {
    margin-top: 40px;
    -webkit-flex: 1 50%;
}