HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.
In CodePen, whatever you write in the HTML editor is what goes within the <body>
tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html>
tag. If you want to add classes there that can affect the whole document, this is the place to do it.
In CodePen, whatever you write in the HTML editor is what goes within the <body>
tags in a basic HTML5 template. If you need things in the <head>
of the document, put that code here.
The resource you are linking to is using the 'http' protocol, which may not work when the browser is using https.
CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.
It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.
To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit-
or -moz-
.
We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).
Any URLs added here will be added as <link>
s in order, and before the CSS in the editor. You can use the CSS from another Pen by using its URL and the proper URL extension.
You can apply CSS to your Pen from any stylesheet on the web. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself.
You can also link to another Pen here (use the .css
URL Extension) and we'll pull the CSS from that Pen and include it. If it's using a matching preprocessor, use the appropriate URL Extension and we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.
JavaScript preprocessors can help make authoring JavaScript easier and more convenient.
Babel includes JSX processing.
Any URL's added here will be added as <script>
s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.
You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.
If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.
You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.
Search for and use JavaScript packages from npm here. By selecting a package, an import
statement will be added to the top of the JavaScript editor for this package.
Using packages here is powered by Skypack, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ES6 import
usage.
All packages are different, so refer to their docs for how they work.
If you're using React / ReactDOM, make sure to turn on Babel for the JSX processing.
If active, Pens will autosave every 30 seconds after being saved once.
If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.
If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.
Visit your global Editor Settings.
.elements
.container
.slide.slide1.index4
video(id="italy", height="310", autoplay, muted, loop, poster="https://i.vimeocdn.com/video/590456190_640x360.jpg")
source(src="//player.vimeo.com/external/181785119.sd.mp4?s=5bb11371ddf8b65207173d68f30ebe9759c60554", type="video/mp4")
| Your browser doesn't support HTML5 video tag.
.slide.index3
video(id="paris", height="310", muted, loop, poster="https://i.vimeocdn.com/video/529880565_640x360.jpg") //, controls)
source(src="//player.vimeo.com/external/135710130.sd.mp4?s=16036acc01a6d26d6a64feb4d92afd23", type="video/mp4")
| Your browser doesn't support HTML5 video tag.
.slide.index2
video(id="hongkong", height="310", muted, loop, poster="https://i.vimeocdn.com/video/571934523_640x360.jpg")
source(src="//player.vimeo.com/external/167599912.sd.mp4?s=f97f57e9205c9c86f10df25404edba51a8ea0917", type="video/mp4")
| Your browser doesn't support HTML5 video tag.
.slide.index1
video(id="prog", height="310", muted, loop, poster="https://i.vimeocdn.com/video/587730046_640x360.jpg")
source(src="//player.vimeo.com/external/179738669.sd.mp4?s=fb42e7e2c8c6ff0d5d0b03dfa6aa8af830019f79", type="video/mp4")
| Your browser doesn't support HTML5 video tag.
.description
.description__country
span La Crusc, Italy
svg.italy(viewbox='0 0 35 23')
rect(width='12', height='23', fill="#3D9348")
rect(x='23', width='12', height='23', fill="#D80031")
.description__country.hide
span Paris, France
svg.france(viewbox='0 0 35 23')
rect(x='-0.1', width='12', height='23', fill="#323E95")
rect(x='23', width='12', height='23', fill="#D80031")
.description__country.hide
span Hong Kong, China
svg.china(viewbox='0 0 35 23')
g
rect(width='35', height='23', fill="#CB1D23")
polygon(points='4,8.9 4.7,6.6 2.8,5.2 5.2,5.2 5.9,2.9 6.7,5.2 9.1,5.2 7.1,6.6 7.8,8.9 5.9,7.5 ', fill="#F7DE29")
polygon(points='10.7,10.1 11.5,10.4 12,9.8 12,10.6 12.8,11 11.9,11.2 11.9,12 11.4,11.3 10.6,11.5 11.1,10.8 ', fill="#F7DE29")
polygon(points='15,5.7 14.2,5.6 13.8,6.3 13.6,5.5 12.8,5.3 13.6,4.9 13.4,4.1 14.1,4.7 14.8,4.3 14.4,5.1 ', fill="#F7DE29")
polygon(points='13.2,9.6 13.5,8.8 12.8,8.3 13.6,8.3 13.9,7.4 14.2,8.3 15.1,8.3 14.4,8.8 14.6,9.6 13.9,9.1 ', fill="#F7DE29")
polygon(points='10.7,2 11.5,2.4 12.1,1.8 12,2.6 12.8,3 11.9,3.2 11.8,4 11.4,3.3 10.5,3.4 11.1,2.8 ', fill="#F7DE29")
.description__country.hide
span Thx for watching
svg.china(viewbox='0 0 35 23')
a(xlink:href='https://twitter.com/AntonMudrenok', target='_blank')
path(d='M31.3,2.7c-1,0.5-2.2,0.8-3.3,0.9c1.2-0.7,2.1-1.9,2.6-3.2c-1.1,0.7-2.4,1.1-3.7,1.4C25.8,0.7,24.3,0,22.6,0\
c-3.2,0-5.8,2.6-5.8,5.8c0,0.5,0.1,0.9,0.1,1.3C12.1,6.9,7.8,4.6,5,1.1C4.5,1.9,4.2,2.9,4.2,4c0,2,1,3.8,2.6,4.8\
c-1,0-1.8-0.3-2.6-0.7c0,0,0,0,0,0.1c0,2.8,2,5.2,4.7,5.7c-0.5,0.1-1,0.2-1.5,0.2c-0.4,0-0.7,0-1.1-0.1c0.7,2.3,2.9,4,5.4,4\
c-2,1.6-4.5,2.5-7.2,2.5c-0.5,0-0.9,0-1.4-0.1C5.6,22,8.6,23,11.9,23c10.7,0,16.5-8.8,16.5-16.5c0-0.3,0-0.5,0-0.8\
C29.5,4.9,30.5,3.9,31.3,2.7z', fill="#55ACEE")
.description__line
.description__text
span How about you explore cultural events in La Crusc?
.description__text.hide
span How about you explore cultural events in Paris?
.description__text.hide
span How about you explore cultural events in Hong Kong?
.description__text.hide
span More demos soon =)
@import url('https://fonts.googleapis.com/css?family=Questrial');
$width: 35rem;
$vidWidth: 32rem;
$vidHeight: 31rem;
$vidPadding: 1.5rem;
$secondFontCol: #aaaaaa;
*, *:before, *:after {
box-sizing: border-box;
margin: 0;
padding: 0;
}
html, body {
font-size: 62.5%;
}
body {
background: #eeeeee;
overflow-x: hidden;
font-family: 'Questrial', "Helvetica Neue", Helvetica, sans-serif;
}
.elements {
position: absolute;
top: 50%; left: 50%;
transform: translate(-50%, -50%);
width: $width;
height: 51rem;
background-color: #fff;
border-radius: 3px;
box-shadow: 0.5rem 1rem 3rem rgba(0,0,0,0.7);
}
.container {
position: relative;
margin: 3rem auto 0;
width: $vidWidth;
}
.slide {
position: absolute;
height: $vidHeight;
width: $vidWidth;
border-radius: 3px;
cursor: grab;
background-color: gray;
overflow: hidden;
will-change: transform;
transform: translateZ(0);
&1 {
box-shadow: 0.2rem 0.2rem 2.5rem rgba(0,0,0,0.7);
background-image: url("https://i.vimeocdn.com/video/590456190_640x360.jpg");
background-size: 55rem;
}
}
#paris {
margin-left: -15rem;
}
#italy, #prog {
margin-left: -0rem;
}
#hongkong {
margin-left: -10rem;
}
.index {
&1 { z-index: 1; }
&2 { z-index: 2; }
&3 { z-index: 3; }
&4 { z-index: 4; }
}
.description {
position: absolute;
top: 39rem;
margin: auto 4.2rem;
width: $width - 4.2 * 2rem;
&__line {
position: absolute;
top: 3.5rem;
width: 100%;
border-bottom: 1px solid #eeeeee;
}
&__country, &__text {
position: absolute;
will-change: transform, opacity;
transform: translateZ(0);
opacity: 1;
transition: all .25s cubic-bezier(.74,.05,.94,.36);
}
&__country {
width: 100%;
font-size: 2rem;
font-weight: 600;
}
&__text {
top: 5rem;
font-size: 1.7rem;
font-weight: 300;
color: $secondFontCol;
transition-delay: 0.03s;
&.hide {
transition-delay: .28s;
}
}
}
.fadeout-up {
opacity: 0;
transform: translate3D(0, -2rem, 0);
}
.hide {
opacity: 0;
transform: translate3D(0, 2rem, 0);
transition: all .25s cubic-bezier(.05,.67,.47,.99);
transition-delay: .25s;
}
.fadein-up {
opacity: 1;
transform: translate3D(0, 0, 0);
}
svg {
width: 3.5rem;
height: 2.3rem;
position: absolute;
right: 0;
top: -0.1rem;
}
$(document).ready(function() {
const $videos = [].slice.call(document.querySelectorAll('.slide'));
const $countries = [].slice.call(document.querySelectorAll(".description__country"));
const $texts = [].slice.call(document.querySelectorAll(".description__text"));
var fromTo = (from, to, prgrs = 0) => from + (to - from) * prgrs;
var easing = {
inCubic: function(t, b, c, d) { // t: current time, b: begInnIng value, c: change In value, d: duration
var ts = (t /= d) * t;
var tc = ts * t;
return b + c * (1.7 * tc * ts - 2.05 * ts * ts + 1.5 * tc - 0.2 * ts + 0.05 * t);
}
};
var transforms = {
translate3D: function(x = 0, y = 0, z = 0, el = "px") {
return `translate3D(${x}${el}, ${y}${el}, ${z}${el})`;
},
rotate3d: function(x = 0, y = 0, z = 0, deg = 0) {
return `rotate3d(${x}, ${y}, ${z}, ${deg}deg)`;
},
rotate: function(deg = 0) {
return `rotate(${deg}deg)`;
},
scale: function(x = 0, y = 0) {
return `scale(${x}, ${y})`;
},
perspective: function(val = 0, el = "px") {
return `perspective(${val}${el})`;
}
};
var descriptions = {
index: 0,
timeout: 550,
countries: $countries.slice(),
texts: $texts.slice(),
animateDescription: function() {
$(this.countries[0]).addClass("fadeout-up");
$(this.countries[1]).addClass("fadein-up");
$(this.texts[0]).addClass("fadeout-up");
$(this.texts[1]).addClass("fadein-up");
},
swapDescription: function() {
let shdC = this.countries.shift();
let shdT = this.texts.shift();
let count = $countries.length;
if (count > this.index + 4) {
this.countries.push($countries[this.index + 5]);
this.texts.push($texts[this.index + 5]);
}
else {
this.countries.push(shdC);
this.texts.push(shdT);
}
this.index === count ? this.index = 0 : this.index++;
this.initDescriptions();
},
initDescriptions: function () {
let length = this.countries.length;
$(this.countries[0]).removeClass("hide fadein-up");
$(this.countries[length - 1]).addClass("hide").removeClass("fadeout-up");
$(this.texts[0]).removeClass("hide fadein-up");
$(this.texts[length - 1]).addClass("hide").removeClass("fadeout-up");
}
};
var curBlocks = {
blocks: $videos.slice(),
index: 0,
swapBlocks: function() {
let shd = this.blocks.shift();
let count = $videos.length;
if (count > this.index + 4) {
this.blocks.push($videos[this.index + 5]);
}
else {
this.blocks.push(shd);
}
this.index === count ? this.index = 0 : this.index++;
initScene();
}
};
var block = {
width: 32,
heigth: 31,
b2scale: 30 / 32,
b3scale: 28 / 32,
upHeigth: 1,
b2caclH: 0,
b3caclH: 0,
interact: false
};
var initScene = function() {
block.b2caclH =
block.heigth * (1 - block.b2scale) * (1 / block.b2scale) / 2
+ block.upHeigth * (1 / block.b2scale);
block.b3caclH =
block.heigth * (1 - block.b3scale) * (1 / block.b3scale) / 2
+ block.upHeigth * 2 * (1 / block.b3scale);
curBlocks.blocks[0].style.transform = transforms.translate3D(0, 0, 0, "rem");
curBlocks.blocks[1].style.transform =
transforms.scale(block.b2scale, block.b2scale)
+ transforms.translate3D(0, block.b2caclH, 0, "rem");
curBlocks.blocks[2].style.transform =
transforms.scale(block.b3scale, block.b3scale)
+ transforms.translate3D(0, block.b3caclH, 0, "rem");
curBlocks.blocks[3].style.transform =
transforms.scale(block.b3scale, block.b3scale);
curBlocks.blocks[0].style.opacity = 1;
curBlocks.blocks[1].style.opacity = 0.1;
curBlocks.blocks[2].style.opacity = 0.03;
curBlocks.blocks[3].style.opacity = 0;
curBlocks.blocks[0].className = "slide slide1 index4";
curBlocks.blocks[1].className = "slide index3";
curBlocks.blocks[2].className = "slide index2";
curBlocks.blocks[3].className = "slide index1";
bindDrag();
};
initScene();
var drag = {
degree: 2.7,
upHeight: 1.5,
maxDrag: 75,
b2scale: 0.98,
b3scale: 0.95,
dx: 0,
frameBusy: false,
helloSafari: 2.9 // need to add this coz of strange behavior
};
var dragBlock = function() {
const maxStep = drag.maxDrag;
let curStep = drag.dx;
if (curStep > maxStep) curStep = maxStep;
if (curStep < -maxStep) curStep = -maxStep;
let progress = curStep / maxStep;
let curDeg = drag.degree * progress;
let curUpLen = drag.upHeight * Math.abs(curStep) / maxStep;
let curScaleBlock2 = drag.b2scale + (1 - drag.b2scale) * (maxStep - curStep) / maxStep;
let curScaleBlock3 = drag.b3scale + (1 - drag.b3scale) * (maxStep - curStep) / maxStep;
curBlocks.blocks[0].style.transform =
transforms.perspective(220, "rem")
+ transforms.rotate(curDeg)
+ transforms.rotate3d(1, 1, 0, curDeg * 3)
+ transforms.translate3D(0, -curUpLen, 0, "rem");
curBlocks.blocks[1].style.transform =
transforms.scale(block.b2scale * curScaleBlock2, block.b2scale * curScaleBlock2)
+ transforms.translate3D(0, block.b2caclH - curUpLen / 4, 0, "rem")
+ transforms.rotate(curDeg / 3)
+ transforms.rotate3d(1, 1, 0, curDeg * drag.helloSafari);
curBlocks.blocks[2].style.transform =
transforms.scale(block.b3scale * curScaleBlock3, block.b3scale * curScaleBlock3)
+ transforms.translate3D(0, block.b3caclH + curUpLen / 1.5 , 0, "rem")
+ transforms.rotate(-curDeg)
+ transforms.rotate3d(1, 1, 0, curDeg * drag.helloSafari);
curBlocks.blocks[0].style.opacity = 1;
curBlocks.blocks[1].style.opacity = fromTo(0.1, 0.7, progress);
curBlocks.blocks[2].style.opacity = fromTo(0.03, 0.07, progress);
curBlocks.blocks[3].style.opacity = 0;
drag.frameBusy = false;
};
var throwing = {
animating: false,
curStep: 0,
maxStep: 15
};
var throwBlock = function() {
if (++throwing.curStep > throwing.maxStep) {
$(document).off("mousedown touchstart");
throwing.curStep = 0;
drag.dx = 0;
curBlocks.blocks[0].children[0].pause();
curBlocks.swapBlocks();
return;
}
let progress = easing.inCubic(throwing.curStep, 0, 1, throwing.maxStep);
let delta = easing.inCubic(throwing.curStep, 0, 1, throwing.maxStep) * 40;
curBlocks.blocks[0].style.transform =
transforms.rotate(drag.degree + delta / 2)
+ transforms.rotate3d(1, 1, 0, drag.degree * 3)
+ transforms.translate3D(delta, -drag.upHeight - delta / 1.2, 0, "rem");
let b2Scale = fromTo(block.b2scale * drag.b2scale, 1, progress);
let b2TransY = fromTo(block.b2caclH - drag.upHeight / 4, 0, progress);
let b2Rot = fromTo(drag.degree / 3, 0, progress);
curBlocks.blocks[1].style.transform =
transforms.scale(b2Scale, b2Scale)
+ transforms.translate3D(0, b2TransY, 0, "rem")
+ transforms.rotate(b2Rot)
+ transforms.rotate3d(1, 1, 0, drag.degree * drag.helloSafari);
let b3Scale = fromTo(block.b3scale * drag.b3scale, block.b2scale, progress);
let b3TransY = fromTo(block.b3caclH + drag.upHeight / 1.5, block.b2caclH, progress);
let b3Rot = fromTo(-drag.degree, 0, progress);
curBlocks.blocks[2].style.transform =
transforms.scale(b3Scale, b3Scale)
+ transforms.translate3D(0, b3TransY , 0, "rem")
+ transforms.rotate(b3Rot)
+ transforms.rotate3d(1, 1, 0, drag.degree * drag.helloSafari);
curBlocks.blocks[3].style.transform =
transforms.scale(block.b3scale, block.b3scale)
+ transforms.translate3D(0, fromTo(0, block.b3caclH, progress) , 0, "rem");
curBlocks.blocks[0].style.opacity = fromTo(1, 0.5, progress);
curBlocks.blocks[1].style.opacity = fromTo(0.7, 1, progress);
curBlocks.blocks[2].style.opacity = fromTo(0.07, 0.1, progress);
curBlocks.blocks[3].style.opacity = fromTo(0, 0.03, progress);
requestAnimationFrame(throwBlock);
};
function bindDrag() {
$(document).on("mousedown touchstart", ".slide1", function (e) {
const startX = e.pageX || e.originalEvent.touches[0].pageX;
const startY = e.pageY || e.originalEvent.touches[0].pageY;
block.interact = true;
$(document).on("mousemove touchmove", function (e) {
let curX = e.pageX || e.originalEvent.touches[0].pageX;
let curY = e.pageY || e.originalEvent.touches[0].pageY;
if (curX - startX <= 0) curX = startX;
if (curY - startY >= 0) curY = startY;
drag.dx = Math.sqrt(Math.pow(curX - startX, 2) + Math.pow(curY - startY, 2));
if (!drag.dx) return;
if (drag.frameBusy) return;
drag.frameBusy = true;
requestAnimationFrame(dragBlock);
});
$(document).on("mouseup touchend", function (e) {
$(document).off("mousemove touchmove mouseup touchend");
if (Math.abs(drag.dx) < drag.maxDrag) {
drag.dx = 0;
requestAnimationFrame(dragBlock);
}
else {
descriptions.animateDescription();
setTimeout(descriptions.swapDescription.bind(descriptions), descriptions.timeout);
curBlocks.blocks[1].children[0].play();
requestAnimationFrame(throwBlock);
}
});
});
};
(function prevAnimation() {
let initDel = 500;
let frames = drag.maxDrag;
let spd = 15;
for (let i = 1; i < frames; i++) {
setTimeout(() => {
if (!block.interact) {
drag.dx = i;
if (drag.frameBusy) return;
requestAnimationFrame(dragBlock);
}
}, initDel + spd * i);
}
for (let i = frames; i >= 0; i--) {
setTimeout(() => {
if (!block.interact) {
drag.dx = i;
if (drag.frameBusy) return;
requestAnimationFrame(dragBlock);
}
}, initDel + spd * (frames * 2 + 1 - i));
}
})();
});
Also see: Tab Triggers