Prepend modal-backdrop to div - twitter-bootstrap-3

I have a container that I want everything to sit within.
At the moment the default behavior for when triggering a modal is that it generates a div with class of "modal-backdrop" and prepends it to the body of the document, I want to prepend it to a div instead of the body but can't figure out how to do it.

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In Razor Pages view, why won't href and onclick attributes render?

In a Razor Pages view (no "#page" attribute; just a cshtml file), I'm attempting to render an anchor tag. I don't want to employ the tag helper, I just want it to render like this:
<i class="fas fa-fast-backward"></i>
The view renders with no error message, but the "href" and "onclick" attributes inside the anchor tag simply do not render. The "class" attribute does render. If I add other attributes to the tag they also render. I'm using fontawesome icons, and they render properly. But the "href" and "onclick" attributes do not render.
For the "href" attribute, if I change the value to "#", it renders. Obviously, something in the RazorPages rendering engine is saying "I will not render this" if the attribute contains javascript.
This apparently only happens in a view. I notice that I try to render the same element on a page (has the #page attribute) it renders fine.
The view itself is rendered when a user clicks a button, which makes a fetch call, which hits a server-side method that renders the view like this:
return Partial("_MyViewName", myModel);
Is there any way to render static values in the href and onclick attributes in an anchor tag in a Razor view?
I was inadvertently removing the javascript myself because, in javascript, I was passing the value returned from the server through the DOMPurify library (to guard against a javascript injection attack). This was very stupid of me, but special thank you to #KingKing for forcing me to figure it out.

main tag in html / CSS

I do have problems understand the tag </main>.
The project im looking at only has one </main> closing tag at the end, it has no opening tag of <main> which confuses me in the first place. It also has main {} in CSS. In order to try to understand what it does, I have played around with it a little.
As I comment out the </main> in html, absolutely nothing changes, which I understand if it has only informativ character, but the part where I get confused is, what is the main {....} in the CSS referring to, since when I comment this out, it will mess up the styling of the hole page.
edit: Since it seems to be unclear what my problem is: The problem is, that main {.....} in CSS does (!) influence the styling of the site, even without an opening <main> tag in html, and even without ANY <main> tag in html (for example if I remove the </main> tag in html.
How can a main {....} in CSS have influence on the styling, if there isn t even any <main> tag in the html whatsoever?
main{...} in css reffers to the styling of the main tag.
More about the element css selector
https://www.w3schools.com/cssref/sel_element.asp
You can learn more about the main tag here
https://www.w3schools.com/TAgs/tag_main.asp
And more about css selectors here
https://www.w3schools.com/cssref/css_selectors.asp
Also note that the main tag must have opening amd closing tag
You have to either add a tag, or remove main{...}.
The tag specifies the main content of a document.
The content inside the element should be unique to the document. It should not contain any content that is repeated across documents such as sidebars, navigation links, copyright information, site logos, and search forms.
Note: There must not be more than one element in a document. The element must NOT be a descendant of an , , , , or element.
just refers to the main content of the page, it does nothing. Main{...} is styling in the CSS page.

Blazor component - inline styling

I've created a simple blazor app that has a slider on top. There is a javascript self executing function that adds some inline css to this slider so it makes its' height the same as window.height.
I'm adding this javascript file in _Host.cshtml, before closing the body tag.
My issue is that this inline styling isn't applied. I've debugged the javascript code and it gets the correct height, the element on which I want to add the styling is found, the element.css('height', myHeight) is being called with the correct value, but in the end there is no style attribute on that element. I've also tried, after the component has been rendered, to remove the script tag from the page and add it again, hoping that it will re-run and then change the height, but no success there as well.
I've created a .NET Core WebApp using that same slider and everything works as expected (I have the style attribute on my element). In this second app I add the script before closing the body tag, in _Layout.cshtml.
Seems preety much the same as the blazor app, but for some reason, on that one doesn't work.
Do you guys have any idea why?
EDIT:
I've found something interesting. In the beginning, the page is loaded correctly, but the component is being reloaded after the app connects to the we socket Information: WebSocket connected to wss://localhost:44361/_blazor?id=cepYgPnJYddq2bHSywwwYw.. This is when I lose the inline styles.
So how can I stop it from reloading? I guess this is the question.

Output recaptcha through js.erb

I need to display content in a lightbox along with recaptcha.This was very easy except that recaptcha can be used only one per page.So, that threw the hidden div option away. Now, iam trying to render the content via js.erb using jquery's html() method. Rest of the content is rendered correctly.But, i'm having trouble rendering recaptcha.Is there a way to render recaptcha via jQuery html() method? I am using Ambethia reCaptcha.
Found a solution. I used a single Div(main lightbox container).Within that div, i added another div which wrapped <%=recaptcha_tags%>.This inner div was placed using absolute positioning.For the rest of the content, i used jquery's append() function instead of html() function.

Alter Rendered Page in Webbrowser Control

is there a way to alter the rendered HTML page in webbrowser control? What i need is to alter the rendered HTML Page in my webbrowser control to highlight selected text.
What i did is use a webclient and use the webclient.Downloadstring() to get the source code of the page, Highlight specific text then write it again in webbrowser. problm is, images along with that page does not appear since they are rendered as relative path.
Is there a way to solve this problem? Is there a way to detect images in a webbrowser control?
Not sure why you need to change the HTML to lighlight text, why not use IHighlightRenderingServices?
To specify a base url when loading HTML string you need to use the document's IPersistMoniker interface and specify a url in your IMoniker implementation.
I suggest you do it a different way, download and replace the text using the webbrowser control, this way your links will work. All you do is replace whatever is in the Search TextBox with the following, say the search term is "hello", then you replace all occurances of hello with the following:
<font color="yellow">hello</font>
Of course, this HTML can be replaced with the SPAN tag (which is an inline version of the DIV tag, so your lines wont break using SPAN, but will using DIV). But in either case, both these tags have a style attribute, where you can use CSS to change its color or a zillion other properties that are CSS compatible, like follows:
<SPAN style="background-color: yellow;">hello</SPAN>
Of course, there are a zillion other ways to change color using HTML, feel free to search the web for more if you want.
Now, you can use the .Replace() function in dotnet to do this (replace the searched text), it's very easy. So, you can Get the Whole document as a string using .DocumentText, and once all occurances are replaced (using .Replace()), you can set it back to .DocumentText (so, you're using .DocumentText to get the original string, and setting .DocumentText with the replaced string). Of course, you probably don't want to do this to items inside the actual HTML, so you can just loop through all the elements on the page by doing a For Each loop over all elements like below:
For Each someElement as HTMLElement in WebBrowser1.Document.All
And each element will have a .InnerText/.InnerHTML and .OuterText/.OuterHTML that you can Get (read from) and Set (overwrite with replaced text).
Of course, for your needs, you'd probably just want to be replacing and overwriting the .InnerText and/or the .OuterText.
If you need more help, let me know. In either case, i'd like to know how it worked out for you anyway, or if there is anything more any of us can do to add value to your problem. Cheers.