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diff --git a/build/keynote-slides-css/index.html b/build/keynote-slides-css/index.html new file mode 100644 index 0000000..45175c6 --- /dev/null +++ b/build/keynote-slides-css/index.html @@ -0,0 +1,117 @@ +<!doctype html> +<html lang="en" id="top"> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1"> + <link rel="icon" href="data:,"> + <title>Keynote Slides with Pure CSS</title> + <link href="https://bt.ht/atom.xml" type="application/atom+xml" rel="alternate" title="Atom feed for blog posts" /> + <style>*{box-sizing:border-box;}body{font-family:sans-serif;margin:0 auto;max-width:650px;padding:1rem;}img{max-width:100%;}pre{overflow:auto;}table{text-align:left;width:100%;}</style> +</head> + +<nav> + <a href="#menu">Menu ↓</a> +</nav> + +<main> +<h1>Keynote Slides with Pure CSS</h1> +<p>2020-06-22</p> +<p>There are a great deal of options available on the web and built into most operating systems when you need to create presentation / keynote slides. You could use native software like LibremOffice Impress, Powerpoint, Apple's Keynote, etc. You could also decide to use preexisting web-based apps like Google Slides or an open source project such as RevealJS. All of these are good options.</p> +<p>But thinking more about how overly complex these apps are implemented, it got me wondering if I could quickly code up a presentation slide framework with pure CSS and barely any code.</p> +<p>This is what I came up with:</p> +<h2>The Demo</h2> +<p><a href="https://codepen.io/bradleytaunt/pen/jOWBJZb">Live CodePen Example</a></p> +<p>Yes, I know this is <em>ugly</em>, but this was created as a barebones skeleton for others to build upon. The demo uses a simple set of <code>radio</code> inputs that correspond to their own individual <code>slide</code> element. The framework looks at the currently <code>checked</code> input, then changes the <code>opacity</code> and <code>z-index</code> of its corresponding slide item. Pretty straightforward stuff!</p> +<p>Let's break down each piece:</p> +<h2>The HTML</h2> +<pre><code><div class="slider"> + <input type="radio" name="pagination" value="1" checked> + <input type="radio" name="pagination" value="2"> + <input type="radio" name="pagination" value="3"> + <input type="radio" name="pagination" value="4"> + <input type="radio" name="pagination" value="5"> + + <div class="slide"> + <h2>Slide 1</h2> + </div> + <div class="slide"> + <h2>Slide 2</h2> + </div> + <div class="slide"> + <h2>Slide 3</h2> + </div> + <div class="slide"> + <h2>Slide 4</h2> + </div> + <div class="slide"> + <h2>Slide 5</h2> + </div> +</div> +</code></pre> +<p>There isn't a whole lot going on here. We are just including a set of <code>radio</code> inputs (based on how many slides are desired) along with their corresponding <code>slide</code> class elements. You might notice we don't do anything to specifically target each individual slide item - you'll see why we don't need to in the CSS section!</p> +<h2>The CSS (SCSS)</h2> +<pre><code>/* Basic default styles */ +.slider { + height: 100%; + left: 0; + position: fixed; + top: 0; + width: 100%; + + .slide { + height: 100%; + opacity: 0; + position: absolute; + width: 100%; + z-index: -2; + } +} + +input[type="radio"] { cursor: pointer; } + +/* Target slide item based on currently checked radio */ +input[type="radio"]:nth-of-type(1):checked ~ .slide:nth-of-type(1), +input[type="radio"]:nth-of-type(2):checked ~ .slide:nth-of-type(2), +input[type="radio"]:nth-of-type(3):checked ~ .slide:nth-of-type(3), +input[type="radio"]:nth-of-type(4):checked ~ .slide:nth-of-type(4), +input[type="radio"]:nth-of-type(5):checked ~ .slide:nth-of-type(5) { + opacity: 1; + z-index: 1; +} + +/* Individual slide styling */ +.slide:nth-of-type(1) { background: dodgerblue; } +.slide:nth-of-type(2) { background: crimson; } +.slide:nth-of-type(3) { background: rebeccapurple; } +.slide:nth-of-type(4) { background: goldenrod; } +.slide:nth-of-type(5) { background: pink; } +</code></pre> +<p>Again, not much to see here. We use CSS to look down through the DOM for each <code>radio</code> elements slide "partner". We do this by targeting the <code>nth-of-type</code> on both elements. Simple stuff.</p> +<p>Some drawbacks to this approach:</p> +<ul> +<li>You need to manually target each new slide you add (color, styling, content, etc.)</li> +<li>Lack of animations might require extra work to implement (maybe 3rd party libraries- ke AOS?)</li> +<li>Probably won't be best for extremely long/complex presentation slides</li> +</ul> +<p>That's it! 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