body {
    background: rgb(240,240,240);
}
.page-content {
    background: white;
    border: solid 1px black;
    width: 21cm;
    height: 29.7cm;
    display: block;
    margin: 0 auto;
    margin-bottom: 0.5cm;
    box-shadow: 0 0 0.5cm rgba(0,0,0,0.5);
    padding: 2cm;
}