javascript - CSS: Things get moved around in scaled-up print preview in Firefox -


page: (http://progrock.rocks/teaching_materials/loops.html).

it's (css, javascript , html) in 1 file:

<!doctype html> <!-- copyright (c) 2016 alf p. steinbach. boost 1.0 license. --> <html>     <head>         <meta charset="utf-8">         <title>lapper «loops» gruppeøvelse praktisk regning</title>         <!-- link rel="stylesheet" href="style.css" -->         <style>             * { font: 10pt sans-serif; }             body { margin: 0; padding: 0; background-color: white; }             h1             {                 padding-left: 14px; padding-top: 0; padding-bottom: 0.5em; padding-right: 0;                 margin-top: 0; margin-bottom: 0;                 background-color: lightgray;                 font-size: xx-large; font-style: italic; color: #a0b0b0;             }             div#content             {                 margin: 0;                 padding-left: 0; padding-right: 0;                 position: absolute; width: 100%;             }             div#input-area             {                 left: 0; right: -0;                 padding-left: 14px; padding-right: 14px;                 padding-top: 0.5em; padding-bottom: 0.5em;                 margin-left: 0; margin-right: 0;                 background-color: #f0f0f0;             }             div#notes-container             {                 left: 0; right: -0;                 padding-left: 14px; padding-right: 14px;                 padding-top: 0.5em; padding-bottom: 0.5em;                 margin-left: 0; margin-right: 0;                 /*display: none;*/             }             input.number-input             {                 width: 5em;             }             .access-key             {                 text-decoration: underline;             }             div.note             {                 margin-top: 0px; margin-right: 12px;                 margin-bottom: 8px; margin-left: 0px;                  padding-left: 2em; padding-right: 2em;                 padding-top: 1em; padding-bottom: 0.5em;                  background-color: #ffffb0;                 width: 15em;                 overflow: hidden;                  border-radius: 1em;                 border: 1px gray solid;                 display: inline-block;             }             div.note-figure             {                 float: right; font-size: 4em; color: #d0e0e0;                 padding: 0px; margin: 0px; vertical-align: top;                 transform: rotate(-7deg);                 border-radius: 0.5em;                 background-color: white;             }         </style>         <script>             function item( id )             {                 return document.getelementbyid( id );             }              function generate()             {                 const n_notes = 11;                 const operand = parseint( item( "fixed-operand" ).value );                 const operation = item( "operation" ).value;    // +, *                 const start_number = (operation == "+"? 0 : 1);                  console.log( "generate" )                 var container = item( "notes-container" );                 var collection = item( "notes-collection" );                 if( collection !== null )                 {                     collection.remove();                     collection = null;                 }                 var message = document.createtextnode("genererer…");                 container.appendchild( message );                  collection = document.createelement( "div" );                 collection.id = "notes-collection";                  var template = item( "note-template" )                 console.log( "template = " + template )                 var current = start_number;                 for( let = 0; < n_notes; ++i )                 {                     let note = template.clonenode( true );                     note.style.display = "inline-block";                     let note_has = note.queryselector( "#note-has" );                     note_has.innerhtml = "jeg har " + current.tostring() + ".";                     let note_seeking = note.queryselector( "#note-seeking" );                     let display_op = (operation == "+"? " + " : "∙");                     note_seeking.innerhtml = "hvem har " + current + display_op + operand + "?";                     if( == n_notes - 1 ) { note_seeking.innerhtml = "siste tall!"; }                     let figure = note.queryselector( "#figure" );                     switch( operation )                     {                         case "+": figure.innerhtml = + "∙" + operand; break;                         case "*": figure.innerhtml = operand + "↑" + i; break;                     }                      collection.appendchild( note );                     switch( operation )                     {                         case "+": current += operand; break;                         case "*": current *= operand; break;                     }                 }                 message.remove();                 container.appendchild( collection );             }              function explanation_of( op )             {                 switch( op )                 {                     case "+":   return "dette gir en gangetabell";                     case "-":   return "dette gir en baklengs gangetabell";                     case "*":   return "dette gir en potenstabell";                     case "/":   return "dette gir en baklengs potenstabell";                 }             }              function update_explanation()             {                 item( "operation-explanation" ).innerhtml =                     "(" + explanation_of( item( "operation" ).value ) + ").";             }              function on_command_generate()             {                 generate();             }              function on_operation_changed()             {                 update_explanation();             }              function on_document_loaded()             {                 item( "title-header" ).innerhtml = document.title;                 item( "operation" ).value = "+";                 update_explanation();                 generate();             }         </script>     </head>     <body onload="on_document_loaded()">         <h1 id="title-header">asdasd</h1>         <div id="content">             <div id="input-area">                 <select id="operation" onchange="on_operation_changed();">                     <option value="+">+ (addisjon)</option>                     <option value="*">* (multiplikasjon)</option>                 </select>                 med fast operand                 <input id="fixed-operand" type="number"                     class="number-input"                     alt="det faste tallet utregningene"                     value="2"                     min="1"                     max="10"                     >                 <span id="operation-explanation"></span>                 <button onclick="on_command_generate();" accesskey="g">                     <span class="access-key">g</span>enerér                 </button>             </div> <!-- input-area -->             <div id="notes-container">                 <div id="note-template" class="note" style="display:none">                     <div id="figure" class="note-figure">                         5∙7                     </div>                     <div style="position: absolute">                         <span id="note-has">jeg har 35</span>                         <br/>                         &nbsp;<br/>                         <span id="note-seeking">hvem har 35 + 7?</span>                     </div>                 </div>                 <div id="notes-collection">                 </div>  <!-- notes-collection -->             <div> <!-- notes-container -->         </div> <!-- content -->     </body> </html>

problem: while print preview in 100% works nicely,

enter image description here

when scale print preview, things after or around page break moved around , result ugly , unusable purpose:

enter image description here

i've tried, on machine, css property should prevent page break within div.note-figure, didn't work. sorry don't have here. i've tried googling problems firefox print preview, no luck.

i not quite sure caused printing preview problem in firefox, fixed giving each yellow note positioning, namely position: relative;, , giving text div inside note position: absolute.

i gave text-div z-index: 1 can float on large gray text when space gets crammed.

the main problem kind of solution that, without understanding of causes of problem, solution pretty arbitrary , hence not reproducible. appreciate if explain going on , why approach works. assuming it's not firefox bug?

div.note {     margin-top: 0px; margin-right: 12px;     margin-bottom: 8px; margin-left: 0px;      padding-left: 2em; padding-right: 2em;     padding-top: 1em; padding-bottom: 0.5em;      background-color: #ffffb0;     width: 15em;     overflow: hidden;      border-radius: 1em;     border: 1px gray solid;     display: inline-block;      position: relative; } div.note-text {     background-color: transparent;     position: absolute; z-index: 1; } div.note-figure {     float: right; font-size: 4em; color: #d0e0e0;     padding: 0px; margin: 0px; vertical-align: top;     transform: rotate(-7deg);     border-radius: 0.5em;     background-color: white; }

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