What you didn't want to know about Print CSS

Print styles are hard, why should we bother?

?

Where should my print styling go?

Previously, in print.css

header nav, footer, .sidebar, .btn, .fa-sort, .fa-sort-up, .fa-sort-down,
.hr-style, .edit-buttons, .top-banner, .tooltip__info-button {
  display: none !important;
}

.no-print {
  disply: none;
}

.sidebar, .detail-progress-buttons, .form-search, .print, footer nav, footer .domains {
  disply: none;
}

.col-xs-9,
.col-lg-10,
.col-md-12 {
  width: 100%;
  padding: 0;
}

.table-with-chart .flex-container > table {	
  width: 100%;	
}
<link rel="stylesheet" type="text/css" href="print.css" media="print">

Previously, in print.css

header nav, footer, .sidebar, .btn, .fa-sort, .fa-sort-up, .fa-sort-down,
.hr-style, .edit-buttons, .top-banner, .tooltip__info-button {
  display: none !important;
}

.no-print {
  disply: none;
}

.sidebar, .detail-progress-buttons, .form-search, .print, footer nav, footer .domains {
  disply: none;
}

.col-xs-9,
.col-lg-10,
.col-md-12 {
  width: 100%;
  padding: 0;
}

.table-with-chart .flex-container > table {	
  width: 100%;	
}
<link rel="stylesheet" type="text/css" href="print.css" media="print">

In the print.css file if:

  • Print reset CSS
  • It's a global print style
  • It's uses any print specific queries like @page

Example print.css

@media print {
  /** Setting margins */       
  @page { margin: 2cm }

  body {
    font: 13pt Georgia, "Times New Roman", Times, serif;
    line-height: 1.3;
    background: #fff !important;
    color: #000;
  }
  
  /* Defining page breaks */
  a {
    page-break-inside: avoid;
  }
}

Example print css

Inline with your component style if:

  • It only applies to that component
  • Overriding specific styling
  • Including hiding it on print

Inline component style.css

.class_name {
  background: blue;
  color: white;
  @media print {
    background: transparent !important;
    color: black !important;
    border: 1px solid black;
  } 
}

Using Tailwind Classes if:

  • You are using Tailwind in a frontend ember app
  • Have screen: print set up in the config
  • Are using tailwind a lot already

Tailwind Classes

<div class="bg-blue-100 print:bg-white">
  <img src="" alt=""
       class="block print:hidden"/>
</div>

The properties need to match or it won't work

What gotchas can you warn me about?

Use an !important after:

  • You've tried making the styling inline and
    more specific
  • It's inside a print media query

CSS Styling isn't getting applied?

What to try

  • Check what property is being override and where it's being applied
    • If it's in the CSS see if you can move it to a tailwind class
    • Otherwise move the print styling to the CSS file

Tailwind styling isn't getting applied?

Firefox Print Hates Flexbox

  • You'll need to update the top elements to use a different display property for print

Firefox isn't printing all the pages

Firefox Print Hates Backgrounds

  • Add some !important 's to background colours and images
  • Turn on the background colour and image print options

Firefox isn't printing background

Backgrounds overflowing

  • Making the elements background transparent so it can’t overflow

  • Adding overflow: hidden to the element

  • Putting the border on the same element as the background-color

  • Making it a fixed height/width

Borders are going missing

Highcharts re-size bug

  • High charts will re-size the chart to the window then print

    • So test on a few responsive sizes and orientations

  • There are open issues and tickets to fix this

My Charts are all the wrong size

Highcharts make them overflow

My Charts are all the wrong size

.highcharts-container {
  overflow: visible !important;
  position: absolute !important;
}

Temp fix only, may go outside some borders

Is there a way to make this less painful?

Chome settings

Make print styles first class

  • print css is the new responsive css
  • Include them as we make a component
    • Keep them together
    • Easier to test and debug
  • Update the docs

What you didn't want to know about Print CSS

By RhianaH

Made with Slides.com

What you didn't want to know about Print CSS

Blake eLearning Jun2020

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