*, *:after, *:before {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

.clearfix:before, .clearfix:after {
    content: '';
    display: table;
}

.clearfix:after {
    clear: both;
}

body {
    background: #fff;
    color: #383a3c;
    font-weight: 400;
    font-size: 1em;
    line-height: 1.25;
    font-family: 'Raleway', Calibri, Arial, sans-serif;
}

a, button {
    outline: none;
}

a {
    color: #566473;
    text-decoration: none;
}

    a:hover, a:focus {
        color: #34495e;
    }

section {
    padding: 1em;
    text-align: center;
}

p.ref {
    text-align: center;
    padding: 2em 1em;
}