Create “print” design from your browser. (Pantoufle basic structure.)

fiddle.css

/* =Pantoufle
 * v0.2.3
 * ---------------------------------------------------------------------------*/
.hide {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}
.page {
  position: relative;
  float: left;
  width: 210mm;
  height: 297mm;
  overflow: hidden;
}
.page .content {
  position: static !important;
  overflow: hidden;
  width: calc(100% - 40mm);
  height: calc(100% - 40mm);
  margin-top: 20mm;
  margin-bottom: 20mm;
}
.page#cover .content {
  width: calc(100% - 40mm);
  height: calc(100% - 40mm);
  margin-top: 20mm;
  margin-right: 20mm;
  margin-bottom: 20mm;
  margin-left: 20mm;
}
.page.page-default:nth-of-type(odd) .content {
  margin-left: 20mm;
  margin-right: 20mm;
}
.page.page-default:nth-of-type(even) .content {
  margin-left: 20mm;
  margin-right: 20mm;
}
/* =Screen
*/
@media screen {
  *,
  *::after,
  *::before {
    box-sizing: border-box;
  }
  html {
    height: 100%;
    width: 100%;
    margin: 0;
  }
  body {
    margin: 0;
    min-width: 450mm;
    background-color: #606060;
  }
  body.preview {
    background-color: #bababa;
  }
  .page {
    margin-top: 1cm;
    background-color: #fff;
    box-shadow: 2px 2px 0px 1px #000, 0px 0px 0px 1px #000;
  }
  .page:last-child {
    margin-bottom: 1cm;
  }
  .page:before {
    content: "";
    display: block;
    position: absolute;
    z-index: 2;
    top: 20mm;
    bottom: 20mm;
    border: 1px solid;
    border-color: #60c600 #738a5e;
    pointer-events: none;
  }
  .page#cover {
    margin-right: 1cm;
    margin-left: 220mm;
  }
  .page#cover:before {
    top: 20mm;
    right: 20mm;
    bottom: 20mm;
    left: 20mm;
  }
  .page.page-default:nth-of-type(odd) {
    margin-left: 1cm;
  }
  .page.page-default:nth-of-type(even) {
    margin-right: 1cm;
  }
  .page.page-default:nth-of-type(odd):before {
    left: 20mm;
    right: 20mm;
  }
  .page.page-default:nth-of-type(even):before {
    left: 20mm;
    right: 20mm;
  }
}
/* =Print
*/
@media print {
  *,
  *::after,
  *::before {
    box-sizing: border-box;
  }
  @page {
    size: landscape;
    margin: 0mm;
  }
  html,
  body {
    background-color: transparent;
    margin: 0;
  }
  .page {
    width: 50vw;
    height: 100vh;
  }
}

@media screen {
  body {
    -ms-transform-origin: top left;
    transform-origin: top left;
    -ms-transform: scale(0.25);
    transform: scale(0.25);
  }
}

/* =Theme
 * Start your theme here.
 * ---------------------------------------------------------------------------*/

fiddle.html

<!-- start page -->
<section class="page page-default">
  <div class="content">
    
    <!-- Content -->
    
  </div>
</section>
<!-- end page -->

fiddle.manifest

name: Pantoufle basic structure
description: Create “print” design from your browser.
authors:
  - Julien Gargot
resources:
  - https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js
normalize_css: no