html, 
body {
    width: 1200px !important;
}

@page {
 /*size: 29.7cm 42cm; -> that would be a regular A4 page */
 size: 29.7cm 42cm;
}

.hidden{display:none;visibility:hidden}
.visible-phone{display:none!important}
.visible-tablet{display:none!important}
.hidden-desktop{display:none!important}
.visible-desktop{display:inherit!important}

.container {
        width:100%;
  }