This is a template for slides using the b6+ framework with a W3C style. The b6+ JavaScript code manages the slide progression, while the style sheet provides the W3C look and some useful predefined layout styles.
If you write slides with this style, you can either put them online or download a zip with everything needed to present offline, as explained below.
Note: The same slides and the same style can also be used with the Shower framework. Look in the HTML source for how to change the script.
If you develop your slides on the W3C web site (with HTTP PUT, WebDav or CVS), then make a directory under https://www.w3.org/Talks/2021/ or https://www.w3.org/2021/Talks/ (or whatever the current year is). The former will be public, the latter requires setting an ACL. Copy b6plus.html (this file) from https://www.w3.org/Talks/Tools/ into your directory and edit the content, or just use it as an example.
If you develop your slides offline (or plan to present them without a network), then download this zip file. Unpacking it creates the following directories and files:
Make a directory for your own slides under slides. (A good name is MMDD-Theme, where MM is the month in which you give the talk, DD the date and Theme the topic, e.g., ‘Legal’, ‘W3C’ or ‘SVG’.) You can copy the b6plus.html file there as a starting point, or just use it as an example. If you make any images, put them in that directory as well.
If you are able to upload your slides, put your directory with all that it contains under https://www.w3.org/Talks/2021/ or https://www.w3.org/2021/Talks/ (replace 2021 by the current year). There is no need to upload the Tools directory. It is is already there.
(Uploading requires HTTP PUT, WebDav or CVS. To set an ACL, you will need ,access.)
Each slide is a section element* with a class of slide:
<section class="slide"> ... slide content here... </section>
Inside the slides, use normal HTML elements (p, ul, em, etc.).
*) Note for advanced users: Although not shown in this template, it is in fact possible to use other elements than section. One common choice is div.
You can add additional text, such as speaker notes or explanations, between the slides. They will be visible in index mode but not in presentation mode. Use elements with a class of comment:
<section class="comment"> ... text here... </section>
If a slide should not show the slide number, add the class clear:
<section class="slide clear"> ... slide content here... </section>
For cover slides (the title slide or separator slides between parts of a presentation), add a class cover. You can combine cover and clear. E.g.:
<section class="slide cover clear"> <h1>My presentations<h1> <address>Peter W. Slidemaker</address> </section>
Slides with narrower text and an illustration on the left or right can be made by adding the class side to the slide. Inside the slide there should be exactly one element that also has a class of side (an image or some other element). Two sizes are possible: normal (about 1/3 of the slide) and big (about 2/3 of the slide).
To put an image on the left:
<section class="slide side"> <img src="..." alt="..." class="side"> ... slide content here... </section>
To put the image on the right, add class right (which may be abbreviated to r):
<section class="slide side r"> <img src="..." alt="..." class="side"> ... slide content here... </section>
Add class big to the slide for a bigger image. To put the image on the left:
<section class="slide side big"> <img src="..." alt="..." class="side"> ... slide content here... </section>
And on the right:
<section class="slide side r big"> <img src="..." alt="..." class="side"> ... slide content here... </section>
Slides can be made to advance automatically after a given time, by setting a data-timing attribute on them with a value of MM:SS (minutes and seconds). E.g.,
<section class="slide" data-timing="1:03">
This slide will remain on screen no longer than 1 minute and 3 seconds, after which the next slide will be shown.
If you want a progress bar during the slide presentation, add an empty div with a class of progress. It can be put before the first slide or after the last, but there should be at most one such element in the file:
<div class="progress"></div>
The progress bar will show as a thin red line along the top of the slides. Its length increases from zero on the first slide to 100% on the last.
To progressively reveal elements on a slide, put a class of next on all elements that should not be visible right away. They will become visible one by one as you press the space bar or an arrow key. E.g.:
<ul> <li>This item is visible when the slide appears <li class="next">This item is not immediately visible <li class="next">This is the third item to appear </ul> <p class="next">This is the last element to appear
To put elements side by side in two columns, make an element (a div, ul or any other element) with class columns. The first child of that element will be put in the left column, the second child in the right column. If there are more children, the third will be in the left column again, the fourth in the right, etc.
<ul class="columns"> <li>First goes on the left</li> <li>Second goes on the right</li> </ul>
Less important text can be shown in a smaller font by giving it a class of note:
<p class="note">Note that this is harder to read</p>
Pre-formatted text (in a pre) can be given line numbers by adding the class numbered:
<pre class="numbered">
No more than 20 lines will be numbered. (In the normal font size, a slide fits 13 lines.)
It is possible to treat the slide as a 3×3 grid and put elements in the four corners, in the middle of each edge, or in the center of the slide. This is done by giving the elements a class of place. On its own, place puts the element in the center. By adding classes top, right, bottom and left the element can be placed in one of the eight other positions.
<div class="place">Put this in the center</div> <div class="place bottom">Put this bottom center</div> <div class="place top right">In the top right</div>
The direction classes can also be abbreviated to t, r, b and l.
To put an image behind the text of a slide, use an img with a class of cover:
<img class="cover" src="..." alt="...">
The image will be stretched to fill the whole of the text area. If the image doesn't fit exactly (wrong aspect ratio), the image will be cropped.
With a class of fit instead of cover, the image will be scaled but without cropping. Instead there may be white bands on the sides or above/below the image, if it doesn't fit exactly.
<img class="fit" src="..." alt="...">
This works both for normal slides and title slides (slides with a class of cover). The logo on the right is not obscured by the image.
If the overlay image is dark, it may be better to use white text. That can be done by adding the class white to the slide:
<section class="slide white">
Other colors (blue titles, list bullets, links, etc.) are also lighter on such slides.
To make all slides white on black, set the class white on the body element. In that case you can use the class black on individual slides to give them black-on-white text.
By default, each slide just replaces the previous one, but there are several predefined slide transitions. You can set a transition on the body element to apply it to all slides:
<body class="fade-in">
Or you can set it on individual slides, to apply only to the transition between that slide and the next. (I.e., it doesn't determine how the slide appears, but how it disappears.)
<section class="slide wipe-left">
You can set both a global transition and local ones. The global transition applies to slides that do not have an explicit transition set locally.
When you present while using a screen reader, you cannot use the screen reader's usual keystrokes to navigate, only the keystrokes defined by the b6+ script. However, the screen reader will speak each slide as soon as it appears. The script creates an element with attributes role=region and aria-live=assertive for that purpose.
When you leave presentation mode, the screen reader will say ‘stopped’. To make it say something else (e.g., because you want a different language than English), create an element with role=region and aria-live=assertive yourself and put the text to speak in it. E.g.:
<div role="region" aria-live="assertive">
Terminé.
</div>
To present the slides, load them into a browser that supports JavaScript and CSS and then press the A key or double-click on a slide or touch the screen with three fingers (on certain devices).
Navigate though the slides by clicking the left mouse button, pressing the spacebar, the arrow keys or Page-up/Page-Down. The Home and End keys jump to the first, resp. last slide. F1 or F toggles full screen mode. The ? (question mark) key shows a list of available commands.
To exit the presentation, press the A key or the Esc key.
You can also see the b6+ documentation for navigation keys & gestures.)
B6+ can show the slides in a second window. The first window can then be used to control the slide show and view notes and next slides. If you have two screens that can show different content (e.g., your computer's screen and a projector), you can thus present the slides on one screen, and see the current and next slides, and any notes, on the other.
Open the second window by pressing the 2 key or the ⧉ button in index mode.
Add ‘?full’ at the end of the URL (but before any fragment ID) to open the slides in presentation mode instead of index mode.
To open in presentation mode at a specific slide, add ‘?full’ and the ID or the number of the slide, e.g., Overview.html?full#place or Overview.html?full#25.
When you don't want the mouse pointer to remain on the screen in presentation mode, add the class hidemouse on the body element. If the mouse does not move for 5 seconds, the pointer is made invisible. It comes back as soon as the mouse is moved.
<body class="hidemouse">
You can also set a different timeout in seconds. E.g, to set a short timeout of 1.5 seconds:
<body class="hidemouse=1.5">
Normally, a mouse click anywhere on a slide (other than on a hyperlink or form element) has the effect of advancing to the next slide or incremental element. If you don't want that, add the class noclick on the body element.
<body class="noclick">
The complete list of key strokes and gestures is in the b6+ documentation, which also shows what else b6+ can do.
This is a template for slides using the b6+ JavaScript framework with a W3C style. For usage instructions, see at the end.
To start the slide show, turn on JavaScript and press ‘A’. Return to the index by pressing ‘A’ or ‘Esc’. On a touch screen, use a 3-finger touch. Double click to open a specific slide. In slide mode, use ‘?’ to get a list of available commands.