Giacomo Lawrance Giacomo Lawrance - 1 year ago 82
CSS Question

Moving a pdf to the left with css

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<ul class="primary-nav">
<li><a href="../index.html">Home</a></li>
<li><a href="../ifcharts.html">IF-Charts</a></li>
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<div class="col-md-10 col-md-offset-1">
<div class="hero-content text-center">
<h1>Sydney arrivals</h1>
.left {
float: left;
<section class="left"> -->
<div id="nav_buttons">
<button id="prev">Previous</button>
<button id="next">Next</button>
<button id="zoomin">Zoom In</button>
<button id="zoomout">Zoom Out</button>
&nbsp; &nbsp;
<span>Page: <span id="page_num"></span> / <span id="page_count"></span></span>
<span> Zoom Level: <span id="zoom_lvl"></span></span>

<div id="chart_window">
<canvas height="1024" width="800" id="the-canvas" style="border:1px solid black"></canvas>

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<script src="../pdfjs/pdf.js"></script>

<script id="script">
// If absolute URL from the remote server is provided, configure the CORS
// header on that server.
var url = '../pdf/YSSY_arr.pdf';

// Disable workers to avoid yet another cross-origin issue (workers need
// the URL of the script to be loaded, and dynamically loading a cross-origin
// script does not work).
// PDFJS.disableWorker = true;

// In cases when the pdf.worker.js is located at the different folder than the
// pdf.js's one, or the pdf.js is executed via eval(), the workerSrc property
// shall be specified.
// PDFJS.workerSrc = '../../build/pdf.worker.js';

var pdfDoc = null,
pageNum = 1,
pageRendering = false,
pageNumPending = null,
scale = 1.5,
maxzoom = 1.8,
minzoom = 0.5,
canvas = document.getElementById('the-canvas'),
ctx = canvas.getContext('2d');

* Get page info from document, resize canvas accordingly, and render page.
* @param num Page number.
function renderPage(num) {
pageRendering = true;
// Using promise to fetch the page
pdfDoc.getPage(num).then(function(page) {
var viewport = page.getViewport(scale);
canvas.height = viewport.height;
canvas.width = viewport.width;

// Render PDF page into canvas context
var renderContext = {
canvasContext: ctx,
viewport: viewport
var renderTask = page.render(renderContext);

// Wait for rendering to finish
renderTask.promise.then(function () {
pageRendering = false;
if (pageNumPending !== null) {
// New page rendering is pending
pageNumPending = null;

// Update page counters
document.getElementById('page_num').textContent = pageNum;
document.getElementById('zoom_lvl').textContent = +scale.toFixed(1);;

//Math.round(scale * 10)/10;


* If another page rendering in progress, waits until the rendering is
* finised. Otherwise, executes rendering immediately.
function queueRenderPage(num) {
if (pageRendering) {
pageNumPending = num;
} else {

* Displays previous page.
function onPrevPage() {
if (pageNum <= 1) {
document.getElementById('prev').addEventListener('click', onPrevPage);

* Displays next page.
function onNextPage() {
if (pageNum >= pdfDoc.numPages) {
document.getElementById('next').addEventListener('click', onNextPage);

* Zooms the page in by changing the scale variable

function zoomIn(){
if (scale <= maxzoom) {
scale = scale + 0.1;
document.getElementById('zoomin').addEventListener('click', zoomIn);

* Zooms the page out by changing the scale variable

function zoomOut(){
if (scale >= minzoom) {
scale = scale - 0.1;
document.getElementById('zoomout').addEventListener('click', zoomOut);

* Asynchronously downloads PDF.
PDFJS.getDocument(url).then(function (pdfDoc_) {
pdfDoc = pdfDoc_;
document.getElementById('page_count').textContent = pdfDoc.numPages;

// Initial/first page rendering

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<p>All procedures</p>
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Hi there

I am trying to make this code move the pdf to the left. However, when I apply the css, the pdf disappears completely.

.left {
float: left;
<section class="left">

That is what I am trying to apply. I have closed the section tags as can be seen in the entire code above. You can see the page here:

As you will be able to see, the pdf is in the centre, and there is a large amount of space between it and the left border. As the pdf can be zoomed, I would like to take advantage of the whole space. I need to move it to the left, but I have no idea how to.

If it helps, the entire repo can be found here:

And you can find the entire file here:

Thanks in advance.

Answer Source

Try adding this to the css:

canvas #the-canvas {
 transform: translateX(-20vw);

Hope that helps!


Add it into the canvas element, with the id of "the-canvas" in your html

<canvas height="892" width="629" id="the-canvas" style="border:1px solid black; transform: translateX(-20vw);"></canvas>

enter image description here

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