Is there any way to have multiple distinct HTML pages contained within a single HTML file? For example, suppose I have a website with two pages:
Page 1 : click here for page 2
and
Page 2 : click here for page 1
Can I create a single HTML file that embeds simple static HTML for both pages but only displays one at a time? My actual pages are of course more complicated with images, tables and javascript to expand table rows. I would prefer to avoid too much script code. Thanks!
Well, you could, but you probably just want to have two sets of content in the same page, and switch between them. Example:
<html>
<head>
<script>
function show(shown, hidden) {
document.getElementById(shown).style.display='block';
document.getElementById(hidden).style.display='none';
return false;
}
</script>
</head>
<body>
<div id="Page1">
Content of page 1
Show page 2
</div>
<div id="Page2" style="display:none">
Content of page 2
Show page 1
</div>
</body>
</html>
(Simplified HTML code, should of course have doctype, etc.)
I used the following trick for the same problem. The good thing is it doesn't require any javascript.
CSS:
.body {
margin: 0em;
}
.page {
width: 100vw;
height: 100vh;
position: fixed;
top: 0;
left: -100vw;
overflow-y: auto;
z-index: 0;
background-color: hsl(0,0%,100%);
}
.page:target {
left: 0vw;
z-index: 1;
}
HTML:
<ul>
<li>Click here for page 1</li>
<li>Click here for page 2</li>
</ul>
<div class="page" id="one">
Content of page 1 goes here.
<ul>
<li>Back</li>
<li>Page 2</li>
</ul>
</div>
<div class="page" id="two">
Content of page 2 goes here.
<ul style="margin-bottom: 100vh;">
<li>Back</li>
<li>Page 1</li>
</ul>
</div>
See a JSFiddle.
Added advantage: as your url changes along, you can use it to link to specific pages. This is something the method won't let you do.
Hope this helps!
have all the pages in distinct div areas
<div style="" id="page1">
First Page Contents
</div>
<div style="display:none" id="page2">
Second Page Contents
</div>
then use a js script to workout what you are viewing (like within an hashtag style) to navigate. Either that, or ajax to get the response from a specific file (like /pages/page1.html)
var $prehashval = "";
function loop()
{
if (location.hash.slice(1)!=$prehashval)
hashChanged();
$prehashval = location.hash.slice(1);
setTimeout("loop()", 100);
}
function hashChanged()
{
var $output;
switch (location.hash.slice(1))
{
case "page1":
document.getElementById('page1').style.display = "";
document.getElementById('page2').style.display = "none";
break;
case "page2":
document.getElementById('page1').style.display = "none";
document.getElementById('page2').style.display = "";
break;
default:
$output = location.hash.slice(1);
}
}
loop();
Have you considered iframes or segregating your content and using a simple show/hide?
Edit If you want to use an iframe, you can have the contents of page1 and page2 in one html file. Then you can decide what to show or hide by reading the location.search property of the iframe. So your code can be like this :
For Page 1 : iframe.src = "mypage.html?show=1"
For Page 2 : iframe.src = "mypage.html?show=2"
Now, when your iframe loads, you can use the location.search.split("=")[1], to get the value of the page number and show the contents accordingly. This is just to show that iframes can also be used but the usage is more complex than the normal show/hide using div structures.
JQuery Mobile has multipage feature. But I am not sure about Desktop Web Applications.
This is kind of overriding the thing of one page, but... You could use iframes in HTML.
<html>
<body>
<iframe src="page1.html" border="0"></iframe>
</body>
</html>
And page1.html would be your base page. Your still making multiple pages, but your browser just doesn't move. So lets say thats your index.html. You have tabs, you click page 2, your url wont change, but the page will. All in iframes. The only thing different, is that you can view the frame source as well.
Screen Rec
You could use Colker, which is built for this, but you'll have to remove the search box, and search feature code, because searching isn't compatible with the type of content you intend to use.
Page contents are stored in a java-script array, and the "page" (eg: ?page=pagename) URL parameter determines which page content to serve.
Twine is an open-source tool for telling interactive, nonlinear stories.
It generates a single html with multiples pages.
Maybe it is not the right tool for you but it could be useful for someone else looking for something similar.
By hiding and showing one another, you can achieve this without embedding it. While Guffa's answer worked quite well, I couldn't figure out how to add more than 2 pages, and while Binz Nakama's answer fixes that, it doesn't quite let you only show Page 1 and toggle between them.
Here's the codepen I made, and here's an example I made from one of my existing websites.
HTML:
<div class="part1">
Page 1 content goes here.
<button onclick="hidePart1()">Go to Page 2</button>
<button onclick="showPart3()">Go to Page 3</button>
</div>
<div class="part2">
Page 2 content goes here.
<button onclick="hidePart2()">Go to Page 1</button>
<button onclick="showPart3()">Go to Page 3</button>
</div>
<div class="part3">
Page 3 content goes here.
<button onclick="hidePart2()">Go to Page 1</button>
<button onclick="hidePart1()">Go to Page 2</button>
</div>
CSS:
.hide {
display: none !important;
}
.show {
display: block !important;
}
.part1 {
display: block;
}
.part2 {
display: none;
}
.part3 {
display: none;
}
JS:
function hidePart1() {
document.querySelector(".part1").classList.remove("show");
document.querySelector(".part1").classList.add("hide");
document.querySelector(".part3").classList.remove("show");
document.querySelector(".part3").classList.add("hide");
document.querySelector(".part2").classList.add("show");
}
function hidePart2() {
document.querySelector(".part2").classList.remove("show");
document.querySelector(".part2").classList.add("hide");
document.querySelector(".part3").classList.remove("show");
document.querySelector(".part3").classList.add("hide");
document.querySelector(".part1").classList.add("show");
}
function showPart3() {
document.querySelector(".part1").classList.remove("hide");
document.querySelector(".part1").classList.remove("show");
document.querySelector(".part1").classList.add("hide");
document.querySelector(".part2").classList.remove("hide");
document.querySelector(".part2").classList.remove("show");
document.querySelector(".part2").classList.add("hide");
document.querySelector(".part3").classList.remove("hide");
document.querySelector(".part3").classList.add("show");
}
While the code above is probably not quite optimized (especially the JS), it definitely works well for me. I am still quite new to JavaScript, and not very good at it.
Edit: Added part 3 to the code.
Edit: Added example.
It is, in theory, possible using data: scheme URIs and frames, but that is rather a long way from practical.
You can fake it by hiding some content with JS and then revealing it when something is clicked (in the style of tabtastic).
Solution 1
One solution for this, not requiring any JavaScript, is simply to create a single page in which the multiple pages are simply regular content that is separated by a lot of white space. They can be wrapped into div containers, and an inline style sheet can endow them with the margin:
<style>
.subpage { margin-bottom: 2048px; }
</style>
... main page ...
<div class="subpage">
<!-- first one is empty on purpose: just a place holder for margin;
alternative is to use this for the main part of the page also! -->
</div>
<div class="subpage">
</div>
<div class="subpage">
</div>
You get the picture. Each "page" is just a section followed by a whopping amount of vertical space so that the next one doesn't show.
I'm using this trick to add "disambiguation navigation links" into a large document (more than 430 pages long in its letter-sized PDF form), which I would greatly prefer to keep as a single .html file. I emphasize that this is not a web site, but a document.
When the user clicks on a key word hyperlink in the document for which there are multiple possible topics associated with word, the user is taken a small navigation menu presenting several topic choices. This menu appears at top of what looks like a blank browser window, and so effectively looks like a page.
The only clue that the menu isn't a separate page is the state of the browser's vertical scroll bar, which is largely irrelevant in this navigation use case. If the user notices that, and starts scrolling around, the whole ruse is revealed, at which point the user will smile and appreciate not having been required to unpack a .zip file full of little pages and go hunting for the index.html.
Solution 2
It's actually possible to embed a HTML page within HTML. It can be done using the somewhat obscure data: URL in the href attribute. As a simple test, try sticking this somewhere in a HTML page:
blah
In Firefox, I get a "blah" hyperlink, which navigates to a page showing the FOO heading. (Note that I don't have a fully formed HTML page here, just a HTML snippet; it's just a hello-world example).
The downside of this technique is that the entire target page is in the URL, which is stuffed into the browser's address input box.
If it is large, it could run into some issues, perhaps browser-specific; I don't have much experience with it.
Another disadvantage is that the entire HTML has to be properly escaped so that it can appear as the argument of the href attribute. Obviously, it cannot contain a plain double quote character anywhere.
A third disadvantage is that each such link has to replicates the data: material, since it isn't semantically a link at all, but a copy and paste embedding. It's not an attractive solution if the page-to-be-embeddded is large, and there are to be numerous links to it.
going along with #binz-nakama, here's an update on his jsfiddle with a very small amount of javascript. also incoporates this very good article on css navigation
update on the jsfiddle
Array.from(document.querySelectorAll("a"))
.map(x => x.addEventListener("click",
function(e){
Array.from(document.querySelectorAll("a"))
.map(x => x.classList.remove("active"));
e.target.classList.add("active");
}
));
Let's say you have multiple pages, with id #page1 #page2 and #page3. #page1 is the ID of your start page. The first thing you want to do is to redirect to your start page each time the webpage is loading. You do this with javascript:
document.location.hash = "#page1";
Then the next thing you want to do is place some links in your document to the different pages, like for example:
Click here to get to page 2.
Then, lastly, you'd want to make sure that only the active page, or target-page is visible, and all other pages stay hidden. You do this with the following declarations in the <style> element:
<style>
#page1 {display:none}
#page1:target {display:block}
#page2 {display:none}
#page2:target {display:block}
#page3 {display:none}
#page3:target {display:block}
</style>
An example that actually uses two separate HTML files. The example is based on this tutorial from Tutorial Republic.
app.js
$(document).ready(function(){
$("#screen").load("page1.html")
$(document).on("click", '#page1_button', function(event) {
$("#screen").load("page2.html")
});
$(document).on("click", '#page2_button', function(event) {
$("#screen").load("page1.html")
});
});
Index.html
<!DOCTYPE html>
<html lang="eng">
<head></head>
<body>
<div id="screen"></div>
<!-- Import JQuery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<!-- Import main JS -->
<script src="app.js"></script>
</body>
</html>
page1.html
<div>Welcome to page one</div>
<button id="page1_button" type="button">Go to page 2</button>
page2.html
<div>Welcome to page two</div>
<button id="page2_button" type="button">Go to page 1</button>
Important: Page one and page two should only have the body content, i.e., without <body> and <HTML> tags.
In case the container should span over the whole page (taken from this StackOverflow answer):
stycle.css
#screen
{
position:fixed;
padding:0;
margin:0;
top:0;
left:0;
width: 100%;
height: 100%;
}
<html>
<head>
<script>
function show(shown, hidden) {
document.getElementById(shown).style.display='block';
document.getElementById(hidden).style.display='none';
return false;
}
</script>
</head>
<body>
Show page 1
Show page 2
<div id="Page1">
Content of page 1
</div>
<div id="Page2" style="display:none">
Content of page 2
</div>
</body>
</html>
Related
I'm pretty new to web design, and I'm trying to build a dashboard for a project. So far, I've got my UI looking like I want it to. It basically consists of a header bar, with a navigation bar on the left side with some options that the user can click on. I want a click on each item to change the content in the central area. The way I thought of was simply to use:
document.getElementById("central text element").innerHTML = "the HTML I want to change it to";
This approach, functionally, does everything I would like. The only problem is, the content I would like to insert is not short. For each of my options, I basically have to create individual HTML documents that I could edit the content in, then run it through a converter like this: https://tomeko.net/online_tools/cpp_text_escape.php?lang=en, then copy it in. As you can probably understand, this method is not very streamlined, as every time I want to make some changes to the code, I have to copy that chunk of code into this converter then paste it into the JavaScript function.
Is there a better way to achieve what I'm trying to do here?
There are several ways to do this:
The <template> element
If you want all the content to be loaded in the page, you can use <template>.
const content1 = document.getElementById("content1").content,
content2 = document.getElementById("content2").content,
div = document.getElementById("div");
function changeContent(content) {
const nodes = [...div.childNodes];
for (let node of nodes) {
node.remove();
}
div.appendChild(content.cloneNode(true));
}
document.getElementById("add-content1-btn").addEventListener("click", () => {
changeContent(content1);
});
document.getElementById("add-content2-btn").addEventListener("click", () => {
changeContent(content2);
});
#div {
border: 1px solid black
}
<template id="content1">
<p>
This is some HTML content. It won't be rendered unless you use JavaScript.
It supports <strong>markup</strong>, of course.
</p>
</template>
<template id="content2">
<p>
This is another HTML content.
</p>
<ul>
<li>Yes,</li>
<li>it</li>
<li>supports</li>
<li>lists.</li>
</ul>
</template>
<button id="add-content1-btn">Add content1 to div</button> <button id="add-content2-btn">Add content2 to div</button>
<div id="div"></div>
Loading pages with <iframe>
You can use <iframe> to load another page inside a page. This is a great approach if the content is really big, because the main page won't need to load that content unless requested. You can change the src attribute of the <iframe> dynamically to load different pages. Note that the page you load needs to be a full page, with its own CSS and all.
<iframe src="https://example.com/">
I'm having to develop a html page on a platform called Unily which doesn't allow me to use any JS or CSS (other than inline). The page is long and I want to use anchors for them to navigate back to the top of the page. This is fine when you click top the first time, but because the url is now #TOP if you scroll down and click on a #top link again, it does nothing.
Is there any way at all without using JS that I can get this to work multiple times?
You can use inline javascript to do this.
<html>
<script type="text/javascript">
function scrollTo(anchor) {
location.hash = anchor;
location.hash = "";
}
</script>
<style>
div a { display: block; min-height: 1000px; background-color: blue;}
</style>
<body>
<div>
<a id="loc1">text</a><br>
</div>
go to Loc 1
</body>
</html>
The above snippet doesn't work when embedded but you can easily copy it to an html file on your computer and run it in your local browser. It works and doesn't even modify the URL so you can avoid ugly #'s in your URL.
I am trying to figure out a way to display an archive of email newsletters on my client's site. The issue is that the newsletters are full of a zillion inline styles, which is great for seeing them in Outlook or wherever, but they're not looking too hot in an otherwise-nicely styled site.
My goal is for my client to be able to copy the entire source code of a generated newsletter (which her list management company* gives her access to) and paste it into the CMS (drupal, if it makes a difference).
*Constant Contact? Mail Chimp? I forget. One of those.
Then I'd like to display it on her site, inside the basic structure (header, nav, etc) of the rest of the site. If this was 1997, I'd say "iframes!" and be done with it, but A) that seems like a lame solution, and B) the code doesn't actually exist on a page by itself, which I think is required for iframes.
Is there some kind of tag I can put around this block of HTML to isolate it from the rest of the site's styles? Or is there another way to go about this entirely?
Thanks!
IFrames are the only way to go that I've ever been able to find. The only alternative to this would be to override every style in the parent page's CSS for the newsletter display area.
As you noted, using an iframe will probably require you to host the newsletters in an independent file. The only alternative to this that I'm aware of is that you can use JavaScript to dynamically create and/or populate the iframe.
If you go with this method, you could have the newsletter present in a div with a specific class, and then use JavaScript to move the div into an iframe. The big downside being that this wouldn't happen for users without JavaScript enabled.
9 years later and there still isn't a better solution.
If you don't have an external source (you can't add html into a frame manually) you need to use js to insert the messy html/css (in my case I use it to view emails)
<iframe class="my-frame" width="100%" height="100%" src="about:blank"></iframe>
and js:
const frame = document.querySelector('.my-frame');
frame.contentWindow.document.open('text/html', 'replace');
frame.contentWindow.document.write(hereGoesYourMessyHtmlCss);
frame.contentWindow.document.close();
Is there a reason why you can't use a modal? That would allow you to force a new request and make the page render how you'd want it to by not applying your general stylesheet while at the same time keeping your user on the desired page. Of course, it doesn't display the element inline so-to-speak, but it's nearly functionally equivelent.
Cutting and pasting raw HTML presents too many security problems, in my opinion. Never trust user's input. Even when the content is entirely benign, next week the designer of newsletter might decide to change their formatting or incorporate some javascript and you'll be responsible for anything that might go wrong.
Therefore I would implement a parser that would drop anything but the content part and leave only b, a, h*, blockquote and similar simple elements, like the ones allowed in forum posts, as well as their styles. After that, you can display it as a normal post in a CMS. I don't see any reason why that should look differently.
As for how to isolate that from your other CSS, you don't really need to if you are careful that all of CSS rules of your CMS apply to elements with specific classes. Alternatively, do a CSS reset for your posts:
.post p {
margin: 0;
...
.post /* all the standard CSS reset rules preceded with .post */
and then
<div class="post"> content parsed from your CMS </div>
Another option that I haven't used myself but am looking to possibly leverage in a similar situation is to use the Shadow DOM which is part of the Web Components spec. My main concern is that we still have some user's using IE 11 and while there seems to be support for polyfills it doesn't look like covering all browser's is real straight forward based on what I've read elsewhere.
Some details on how to use Shadow DOM to this effect can be found here and here. I've also created a small gist that I've created to demonstrate basic idea that I've been formulating as I learn about how the Shadow DOM works which I'll be updating as I learn more. Below you can see a snapshot of the content of that gist.
<!doctype html>
<html>
<head>
<style>
.row {
display: flex;
}
.column {
flex: 50%;
padding: 10px;
height: 300px;
}
* {
color: Red;
}
</style>
</head>
<body>
<div class="row">
<div class="column" style="background-color:#aaa;">
<h2>Column 1</h2>
<div id="content1">
SOME CONTENT FROM CMS
</div>
</div>
<div class="column" style="background-color:#bbb;">
<h2>Column 2</h2>
<div id="content2">
SOME MORE CONTENT FROM CMS
</div>
</div>
</div>
<script>
document
.getElementById("content1")
.attachShadow({ mode: 'open' })
.innerHTML = `
<style>
*{all:initial}
style{display: none}
div{display: block}
</style>
<h3>This text is not red</h3>
<div>slot content: <slot></slot></div>`;
document
.getElementById("content2")
.attachShadow({ mode: 'open' })
.innerHTML = `
<style>
*{all:initial}
style{display: none}
div{display: block}
</style>
<h3>This text is not red</h3>
<div>slot content: <slot></slot></div>`;
</script>
</body>
</html>
First allow me preface, I know very little about html, CSS, etc. Most of what I can do is by following other examples. I am doing a header menu, and each link is an anchor within the page. (the div are hidden until clicked) However I became stuck on this problem. I have link within page as follows:
<div class="header">
Block 1
Block 2
</div>
This will give me url "localhost/test1.html#B1". However, one of the div blocks contains this:
<div id="B1">
<a href="#slide-one">
<a href="#slide-two">
</div>
So I already figured out I can't do "localhost/test1.html#B1#slide-one".
I don't know if its possible to even do this anchor link to page that is already opened as anchor. No option to use any jquery, flash, java, etc. I can only use HTML/CSS. I am going to assume this is not possible, but I thought one last attempt to try this and ask here.
EDIT:
Updated sample code provide better explanation:
<style type="text/css">
div#Menu {
height:90px;
left:0;
position:fixed;
top:-5px;
width:100%;
text-align:center;
}
div#B1 {
position:absolute;
left:-1000px;
margin-top:0;
}
div#B1:target {
top:100px;
left:375px;
}
div#B2 {
position:absolute;
left:-1000px;
margin-top:0;
}
div#B2:target {
top:100px;
left:375px;
}
</style>
</head>
<body>
<!--Header Menu-->
<div id="Menu" class="header">
Block 1
Block 2
</div>
<div id="B1" class="blocks">
<div id="Slider1" class="Slide">
<ul>
<li id="slide-one"><img src="slide-one.png"/></li>
<li id="slide-two"><img src="slide-two.png"/></li>
</ul>
Slide 1
Slide 2
</div>
</div>
<div id="B2">
<div id="Slider1" class="Slide">
<ul>
<li id="slide-three"><img src="slide-three.png"/></li>
<li id="slide-four"><img src="slide-four.png"/></li>
</ul>
Slide 3
Slide 4
</div>
</div>
What I have are CSS image sliders with thumbnail navigation that are anchors within each section. On the menu I go to block #1 which opens which contains one image slider gallery. My page url changes to "test1.html#B1" The image slider has anchor for each image.
On a separate normal page the slider alone would give page url for each image something like "test1.html#slide-one".
But this is nested, and the image slider is child to "B1" block. I need to have the block #B1 opened, and AFTER that has opened on page I have the image slider gallery. That has its own anchors for each image, but I need "B1" to remain.
From how your question is expressed we can think of two different needs:
Since you said you're wanting to do localhost/test1.html#B1#slide-one it could mean that you consider #slide-one exists not only in the "context" of #B1 but also elsewhere (say in #B2 for instance): but if this happens it means that #B1 and #B2 are not in the same HTML page! So it cannot be what you're wanting.
At the opposite, the whole rest of your text indicates that all the parts you want to reach are in the same page. So it's the case I'will explain below.
When in the same HTML page, it can't be several ids with the same value: an id is unique, by design.
The consequence is: to target a given id you have no need of several intermediate points, even if the user really used these intermediate points like in your example.
In summary, the code you showed in your question is perfectly enough!
Last point: if an id is always unique, at the opposite you can have an unlimited number of occurrences where you target it. In other words, the same (unique) destination can be pointed to from several <a>.
I am trying to figure out a way to display an archive of email newsletters on my client's site. The issue is that the newsletters are full of a zillion inline styles, which is great for seeing them in Outlook or wherever, but they're not looking too hot in an otherwise-nicely styled site.
My goal is for my client to be able to copy the entire source code of a generated newsletter (which her list management company* gives her access to) and paste it into the CMS (drupal, if it makes a difference).
*Constant Contact? Mail Chimp? I forget. One of those.
Then I'd like to display it on her site, inside the basic structure (header, nav, etc) of the rest of the site. If this was 1997, I'd say "iframes!" and be done with it, but A) that seems like a lame solution, and B) the code doesn't actually exist on a page by itself, which I think is required for iframes.
Is there some kind of tag I can put around this block of HTML to isolate it from the rest of the site's styles? Or is there another way to go about this entirely?
Thanks!
IFrames are the only way to go that I've ever been able to find. The only alternative to this would be to override every style in the parent page's CSS for the newsletter display area.
As you noted, using an iframe will probably require you to host the newsletters in an independent file. The only alternative to this that I'm aware of is that you can use JavaScript to dynamically create and/or populate the iframe.
If you go with this method, you could have the newsletter present in a div with a specific class, and then use JavaScript to move the div into an iframe. The big downside being that this wouldn't happen for users without JavaScript enabled.
9 years later and there still isn't a better solution.
If you don't have an external source (you can't add html into a frame manually) you need to use js to insert the messy html/css (in my case I use it to view emails)
<iframe class="my-frame" width="100%" height="100%" src="about:blank"></iframe>
and js:
const frame = document.querySelector('.my-frame');
frame.contentWindow.document.open('text/html', 'replace');
frame.contentWindow.document.write(hereGoesYourMessyHtmlCss);
frame.contentWindow.document.close();
Is there a reason why you can't use a modal? That would allow you to force a new request and make the page render how you'd want it to by not applying your general stylesheet while at the same time keeping your user on the desired page. Of course, it doesn't display the element inline so-to-speak, but it's nearly functionally equivelent.
Cutting and pasting raw HTML presents too many security problems, in my opinion. Never trust user's input. Even when the content is entirely benign, next week the designer of newsletter might decide to change their formatting or incorporate some javascript and you'll be responsible for anything that might go wrong.
Therefore I would implement a parser that would drop anything but the content part and leave only b, a, h*, blockquote and similar simple elements, like the ones allowed in forum posts, as well as their styles. After that, you can display it as a normal post in a CMS. I don't see any reason why that should look differently.
As for how to isolate that from your other CSS, you don't really need to if you are careful that all of CSS rules of your CMS apply to elements with specific classes. Alternatively, do a CSS reset for your posts:
.post p {
margin: 0;
...
.post /* all the standard CSS reset rules preceded with .post */
and then
<div class="post"> content parsed from your CMS </div>
Another option that I haven't used myself but am looking to possibly leverage in a similar situation is to use the Shadow DOM which is part of the Web Components spec. My main concern is that we still have some user's using IE 11 and while there seems to be support for polyfills it doesn't look like covering all browser's is real straight forward based on what I've read elsewhere.
Some details on how to use Shadow DOM to this effect can be found here and here. I've also created a small gist that I've created to demonstrate basic idea that I've been formulating as I learn about how the Shadow DOM works which I'll be updating as I learn more. Below you can see a snapshot of the content of that gist.
<!doctype html>
<html>
<head>
<style>
.row {
display: flex;
}
.column {
flex: 50%;
padding: 10px;
height: 300px;
}
* {
color: Red;
}
</style>
</head>
<body>
<div class="row">
<div class="column" style="background-color:#aaa;">
<h2>Column 1</h2>
<div id="content1">
SOME CONTENT FROM CMS
</div>
</div>
<div class="column" style="background-color:#bbb;">
<h2>Column 2</h2>
<div id="content2">
SOME MORE CONTENT FROM CMS
</div>
</div>
</div>
<script>
document
.getElementById("content1")
.attachShadow({ mode: 'open' })
.innerHTML = `
<style>
*{all:initial}
style{display: none}
div{display: block}
</style>
<h3>This text is not red</h3>
<div>slot content: <slot></slot></div>`;
document
.getElementById("content2")
.attachShadow({ mode: 'open' })
.innerHTML = `
<style>
*{all:initial}
style{display: none}
div{display: block}
</style>
<h3>This text is not red</h3>
<div>slot content: <slot></slot></div>`;
</script>
</body>
</html>