media="all"
@media screen and (min-width: 87.6875em)
body:before {
    width: -webkit-calc(50% - 289px);
    width: calc(50% - 289px);
    background-image: url('http://www.piggy.dk/wp-content/uploads/lawn.jpg');
}

media="all"
@media screen and (min-width: 59.6875em)
.sidebar {
    float: left;
    margin-right: -100%;
    max-width: 413px;
    position: relative;
    width: 29.4118%;
background-color: #fff;
}