/* So you like the style of impress.js demo? Or maybe you are just curious how it was done? You couldn't find a better place to find out! Welcome to the stylesheet impress.js demo presentation. Please remember that it is not meant to be a part of impress.js and is not required by impress.js. I expect that anyone creating a presentation for impress.js would create their own set of styles. But feel free to read through it and learn how to get the most of what impress.js provides. And let me be your guide. Shall we begin? */ /* We start with a good ol' reset. That's the one by Eric Meyer http://meyerweb.com/eric/tools/css/reset/ You can probably argue if it is needed here, or not, but for sure it doesn't do any harm and gives us a fresh start. */ html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video { margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline; } /* HTML5 display-role reset for older browsers */ article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; } body { line-height: 1; } ol, ul { list-style: none; } blockquote, q { quotes: none; } blockquote:before, blockquote:after, q:before, q:after { content: ''; content: none; } table { border-collapse: collapse; border-spacing: 0; } /* Now here is when interesting things start to appear. We set up styles with default font and nice gradient in the background. And yes, there is a lot of repetition there because of -prefixes but we don't want to leave anybody behind. */ body { font-family: 'PT Sans', sans-serif; min-height: 740px; background: rgb(215, 215, 215); background: -webkit-gradient(radial, 50% 50%, 0, 50% 50%, 500, from(rgb(240, 240, 240)), to(rgb(190, 190, 190))); background: -webkit-radial-gradient(rgb(240, 240, 240), rgb(190, 190, 190)); background: -moz-radial-gradient(rgb(240, 240, 240), rgb(190, 190, 190)); background: -ms-radial-gradient(rgb(240, 240, 240), rgb(190, 190, 190)); background: -o-radial-gradient(rgb(240, 240, 240), rgb(190, 190, 190)); background: radial-gradient(rgb(240, 240, 240), rgb(190, 190, 190)); } /* Now let's bring some text styles back ... */ b, strong { font-weight: bold } i, em { font-style: italic } /* ... and give links a nice look. */ a { color: inherit; text-decoration: none; padding: 0 0.1em; background: rgba(255,255,255,0.5); text-shadow: -1px -1px 2px rgba(100,100,100,0.9); border-radius: 0.2em; -webkit-transition: 0.5s; -moz-transition: 0.5s; -ms-transition: 0.5s; -o-transition: 0.5s; transition: 0.5s; } a:hover, a:focus { background: rgba(255,255,255,1); text-shadow: -1px -1px 2px rgba(100,100,100,0.5); } /* Because the main point behind the impress.js demo is to demo impress.js we display a fallback message for users with browsers that don't support all the features required by it. All of the content will be still fully accessible for them, but I want them to know that they are missing something - that's what the demo is about, isn't it? And then we hide the message, when support is detected in the browser. */ .fallback-message { font-family: sans-serif; line-height: 1.3; width: 780px; padding: 10px 10px 0; margin: 20px auto; border: 1px solid #E4C652; border-radius: 10px; background: #EEDC94; } .fallback-message p { margin-bottom: 10px; } .impress-supported .fallback-message { display: none; } /* Now let's style the presentation steps. We start with basics to make sure it displays correctly in everywhere ... */ .step { position: relative; width: 900px; padding: 40px; margin: 20px auto; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; -ms-box-sizing: border-box; -o-box-sizing: border-box; box-sizing: border-box; font-family: 'PT Serif', georgia, serif; font-size: 48px; line-height: 1.5; } .hint { /* We hide the hint until presentation is started and from browsers not supporting impress.js, as they will have a linear scrollable view ... */ display: none; /* ... and give it some fixed position and nice styles. */ position: fixed; left: 0; right: 0; bottom: 200px; background: rgba(0,0,0,0.5); color: #EEE; text-align: center; font-size: 50px; padding: 20px; z-index: 100; /* By default we don't want the hint to be visible, so we make it transparent ... */ opacity: 0; /* ... and position it below the bottom of the screen (relative to it's fixed position) */ -webkit-transform: translateY(400px); -moz-transform: translateY(400px); -ms-transform: translateY(400px); -o-transform: translateY(400px); transform: translateY(400px); /* Now let's imagine that the hint is visible and we want to fade it out and move out of the screen. So we define the transition on the opacity property with 1s duration and another transition on transform property delayed by 1s so it will happen after the fade out on opacity finished. This way user will not see the hint moving down. */ -webkit-transition: opacity 1s, -webkit-transform 0.5s 1s; -moz-transition: opacity 1s, -moz-transform 0.5s 1s; -ms-transition: opacity 1s, -ms-transform 0.5s 1s; -o-transition: opacity 1s, -o-transform 0.5s 1s; transition: opacity 1s, transform 0.5s 1s; } /* Now we 'enable' the hint when presentation is initialized ... */ .impress-enabled .hint { display: block } /* ... and we will show it when the first step (with id 'start') is active. */ .impress-on-start .hint { /* We remove the transparency and position the hint in its default fixed position. */ opacity: 1; -webkit-transform: translateY(0px); -moz-transform: translateY(0px); -ms-transform: translateY(0px); -o-transform: translateY(0px); transform: translateY(0px); /* Now for fade in transition we have the oposite situation from the one above. First after 4.5s delay we animate the transform property to move the hint into its correct position and after that we fade it in with opacity transition. */ -webkit-transition: opacity 1s 5s, -webkit-transform 0.5s 4.5s; -moz-transition: opacity 1s 5s, -moz-transform 0.5s 4.5s; -ms-transition: opacity 1s 5s, -ms-transform 0.5s 4.5s; -o-transition: opacity 1s 5s, -o-transform 0.5s 4.5s; transition: opacity 1s 5s, transform 0.5s 4.5s; } /* And as the last thing there is a workaround for quite strange bug. It happens a lot in Chrome. I don't remember if I've seen it in Firefox. Sometimes the element positioned in 3D (especially when it's moved back along Z axis) is not clickable, because it falls 'behind' the element. To prevent this, I decided to make non clickable by setting pointer-events property to `none` value. Value if this property is inherited, so to make everything else clickable I bring it back on the #impress element. If you want to know more about `pointer-events` here are some docs: https://developer.mozilla.org/en/CSS/pointer-events There is one very important thing to notice about this workaround - it makes everything 'unclickable' except what's in #impress element. So use it wisely ... or don't use at all. */ .impress-enabled { pointer-events: none } .impress-enabled #impress { pointer-events: auto } .step { -webkit-transition: opacity 1s; -moz-transition: opacity 1s; -ms-transition: opacity 1s; -o-transition: opacity 1s; transition: opacity 1s; } .step:not(.active) { opacity: 0; }