openproject/app/assets/stylesheets/layout/_print.sass

/***** Media print specific styles *****/
@media print
  #top-menu,
  #header,
  #main-menu,
  #sidebar,
  #footer,
  #breadcrumb,
  .contextual,
  .other-formats
    display: none

  #main
    background: #fff

  #content
    width: 99%
    margin: 0
    padding: 0
    border: 0
    background: #fff
    overflow: visible !important

  #wiki_add_attachment
    display:none

  .hide-when-print
    display: none

  .autoscroll
    overflow-x: visible

  table.list
    margin-top: 0.5em

    th, td
      border: 1px solid #aaa

  // Sizes from user agent stylesheet
  h1
    font-size: 2em
  h2
    font-size: 1.5em
  h3
    font-size: 1.17em

  //
  // WORK PACKAGE table
  //
  .controller-work_packages.action-index,
  .controller-work_packages.action-show,
  .controller-work_packages.full-create
    .wp-timeline--slider-wrapper
      display: none !important
    #content
      margin: 0
      width: 100%
      height: 100%
      padding: 10px
    #main
      top: 0
      padding: 0
      border: none
    .work-packages--list-table-area
      height: 100%
    .work-package-table--container,
    .generic-table--results-container
      overflow: hidden
    .wp-timeline--scroll-wrapper
      border-left-width: 3px