html, body {
    margin: 0;
    padding: 0;
    background-attachment: fixed;
    background-position: 50% 50%;
    background-size: cover;
}

a {
    text-decoration: underline;
}

    a:hover {
        text-decoration: none;
    }

.bg-red {
    background-image: url(../../images/bg-red.jpg);
}

.bg-orange {
    background-image: url(../../images/bg-orange.jpg);
}

.bg-yellow {
    background-image: url(../../images/bg-yellow.jpg);
}

.bg-green {
    background-image: url(../../images/bg-green.jpg);
}

.bg-cyan {
    background-image: url(../../images/bg-cyan.jpg);
}

.bg-blue {
    background-image: url(../../images/bg-blue.jpg);
}

.bg-purple {
    background-image: url(../../images/bg-purple.jpg);
}

.bg-pink {
    background-image: url(../../images/bg-pink.jpg);
}

.bg-black {
    background-image: url(../../images/bg-black.jpg);
}

.body {
    max-width: 600px;
    margin: 0 auto;
    padding: 40px;
    box-sizing: content-box;
    -moz-box-sizing: content-box;
}

.body-s {
    max-width: 400px;
}

.body-l {
    max-width: 700px !important;
}

.modal {
    padding: 25px 30px;
    background: rgba(255,255,255,0.9);
    font: 13px/1.55 'Open Sans', Helvetica, Arial, sans-serif;
    color: #666;
}

    .modal a {
        color: #2da5da;
    }

@media screen and (max-width: 600px) {
    .body {
        padding: 20px;
    }
}