Bootstrap loses layout printing portrait
I created what looked like a usable template from a web site, and happily started to use it. My printer was initially set to landscape when I printed the information, so everything looked fine and I got a pretty report neatly centred in the page. The following is a file I generated (I'm using jinja2 templating, but if I know what's wrong with the HTML/CSS I can fix the templates).
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Bootstrap 4, from LayoutIt! -->
<title>SPoE Testing</title>
<meta name="description" content="Source code generated using layoutit.com">
<meta name="author" content="LayoutIt!">
<link href="css/bootstrap.min.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">
</head>
<body>
<div class="container-fluid">
<div class="row">
<div class="col-md-3">
</div>
<div class="col-md-6">
<div class="page-header">
<h1>
Integrated Next-Generation Test System
</h1>
<hr>
</div>
</div>
<div class="col-md-3">
</div>
</div>
<div class="row">
<div class="col-md-3">
</div>
<div class="col-md-6">
<div class="page-header">
<h2>
Single PoE <small>Unit 0000000 at 2019-05-23 23:59:59</small>
</h2>
<hr>
</div>
<div class="row">
<div class="col-md-4">
<h3>#0000000</h3>
</div>
<div class="col-md-8">
<h3>pass</h3>
</div>
</div>
<div class="row">
<div class="col-md-4">
<h5>Step 1</h5>
</div>
<div class="col-md-8">
<h5>pass</h5>
</div>
</div>
<div class="row">
<div class="col-md-1"></div>
<div class="col-md-3">
power
</div>
<div class="col-md-8">
28.1
</div>
</div>
<div class="row">
<div class="col-md-1"></div>
<div class="col-md-3">
current
</div>
<div class="col-md-8">
525
</div>
</div>
<div class="row">
<div class="col-md-1"></div>
<div class="col-md-3">
voltage
</div>
<div class="col-md-8">
53.7
</div>
</div>
</div>
<div class="col-md-3">
</div>
</div>
</div>
<script src="js/jquery.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="js/scripts.js"></script>
<style type="text/css"> @page { size: auto } </style>
</body>
</html>
As you can see this prints fine in landscape:
Unfortunately when I try to print in portrait the output is rather less convincing:
The inline @page { size: auto } is something I added as a result of my researches - it was recommended in this question but alas it appears to make no difference. Interestingly, while I found several questions relating to inability to print in landscape, nobody else appears to have found portrait layout an issue.
As a designer I'm a pretty good bricklayer, so while software is no problem at all for me I find these design issues quite tortuous sometimes. What is going on here, and how do I fix it?
You will need to write CSS for print media.
Here is a basic example based on your code
@media print and (max-width: 767px) {
.row{
display: flex;
flex-direction: row;
}
.col-md-3{
flex-basis: 25%;
}
.col-md-1{
flex-basis: 8.33%;
}
.col-md-8{
flex-basis: 66.67%;
}
.col-md-6{
flex-basis: 50%;
}
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Bootstrap 4, from LayoutIt! -->
<title>SPoE Testing</title>
<meta name="description" content="Source code generated using layoutit.com">
<meta name="author" content="LayoutIt!">
<link href="css/bootstrap.min.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">
</head>
<body>
<div class="container-fluid">
<div class="row">
<div class="col-md-3">
</div>
<div class="col-md-6">
<div class="page-header">
<h1>
Integrated Next-Generation Test System
</h1>
<hr>
</div>
</div>
<div class="col-md-3">
</div>
</div>
<div class="row">
<div class="col-md-3">
</div>
<div class="col-md-6">
<div class="page-header">
<h2>
Single PoE <small>Unit 0000000 at 2019-05-23 23:59:59</small>
</h2>
<hr>
</div>
<div class="row">
<div class="col-md-4">
<h3>#0000000</h3>
</div>
<div class="col-md-8">
<h3>pass</h3>
</div>
</div>
<div class="row">
<div class="col-md-4">
<h5>Step 1</h5>
</div>
<div class="col-md-8">
<h5>pass</h5>
</div>
</div>
<div class="row">
<div class="col-md-1"></div>
<div class="col-md-3">
power
</div>
<div class="col-md-8">
28.1
</div>
</div>
<div class="row">
<div class="col-md-1"></div>
<div class="col-md-3">
current
</div>
<div class="col-md-8">
525
</div>
</div>
<div class="row">
<div class="col-md-1"></div>
<div class="col-md-3">
voltage
</div>
<div class="col-md-8">
53.7
</div>
</div>
</div>
<div class="col-md-3">
</div>
</div>
</div>
<script src="js/jquery.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="js/scripts.js"></script>
<style type="text/css"> @page { size: auto } </style>
</body>
</html>