It means that the http server at cw.na1.hgncloud.com send some http headers to tell web browsers like Chrome to allow iframe loading of that page (https://cw.na1.hgncloud.com/crossmatch/) only from a page hosted on the same domain (cw.na1.hgncloud.com) :
Content-Security-Policy: frame-ancestors 'self' https://cw.na1.hgncloud.com X-Frame-Options: ALLOW-FROM https://cw.na1.hgncloud.com
You should read that :
- https://developer.mozilla.org/en-US/docs/Web/Security/CSP
- https://developer.mozilla.org/en-US/docs/Web/Security/Same-origin_policy
Related Posts:
- How to center an iframe horizontally?
- How to align iframe always in the center
- Alternative to iFrames with HTML5
- Remove border from IFrame
- How to apply CSS to iframe?
- Play videos with iframe in html
- HTML iframe – disable scroll
- How to do auto-width with HTML IFrame
- Remove scrollbar from iframe
- How to disable auto-play for local video in iframe
- difference between iframe, embed and object elements
- Full Page < iframe >
- Change background color of iframe issue
- html : iframe not showing content in html
- Open source social media icons to download and use on website? [closed]
- CSS calc width and height values
- How to create an HTML button that acts like a link
- What does In html mean
- Draw Circle using css alone [duplicate]
- How to get a tab character?
- What is the difference between
and ?- Center-align a HTML table
- Is there any way to change input type=”date” format?
- How to center a “position: absolute” element
- How to run python script in HTML?
- CSS Display an Image Resized and Cropped
- How do I make a placeholder for a ‘select’ box?
- Javascript: getElementById vs getElementsById (both works on different pages)
- localhost/test.php returns nothing
- CSS color vs. background-color vs. background?
- Getting “Failed to load resource: net::ERR_FILE_NOT_FOUND” when trying to load a background image
- CSS: background-color only inside the margin
- Stretch background image css?
- Set cellpadding and cellspacing in CSS?
- How to give the background-image path in CSS?
- How to overlay image with color in CSS?
- CSS Background image not loading
- Outline radius?
- How to call a JavaScript function within an HTML body
- right align an image using CSS HTML
- CSS Background Image Not Displaying
- Show/hide ‘div’ using JavaScript
- html not linking css
- Make iframe automatically adjust height according to the contents without using scrollbar?
- Removing border from table cells
- Check a radio button with javascript
- HTML Display Current date
- Error: The requested URL “[no URL]”, is invalid
- How to get CSS to select ID that begins with a string (not in Javascript)?
- Hidden property of a button in HTML
- Setting table row height
- How do I disable the resizable property of a textarea?
- Is there any reason for using WebGL instead of 2D Canvas for 2D games/apps?
- Is it possible to set the equivalent of a src attribute of an img tag in CSS?
- Why is colspan not applied as expected
- Document Root PHP
- Padding a table row
- Reload an iframe with jQuery
- How to align 3 divs (left/center/right) inside another div?
- Align an element to bottom with flexbox
- How can I change the thickness of my
tag- jquery – how to show a hidden div
- How do I horizontally center a table in Bootstrap
- How do I center text in a span?
- text-align justify not working
- Best way to center a
on a page vertically and horizontally?- Find out whether radio button is checked with JQuery?
- Display text on MouseOver for image in html
- How to make a div 100% height of the browser window
- How to resize an image to fit in the browser window?
- HTML / CSS table with GRIDLINES
- Display text on MouseOver for image in html
- Layout a flex box similar to a table?
- How can I capture the right-click event in JavaScript?
- In which directory do I find the HTML file of my wordpress pages?
- How can I publish Word files to a WordPress blog without losing the footnotes?
- Preserve white-space in Page
- How do we remove mystical [X] from text? Image included
- How can I set different html lang attribute for different countries?
- Add Attribute to p Tag of Post Content
- custom html in page change in browser
- Add Adsense to a website but the server responds with error 510 [closed]
- Can’t save any WordPress post with the html tag in it
- remove string: ‘custom content…’ from every page
- How to disable escaping html chars in wordpress?
- Whitespace Before Doctype
- html entities occur in the_excerpt used as meta description
- Allow Access To Subfolder Of HTML For Logged In Visitors
- Removing Line Break Tags from a Page
- Insert data through a script directly in the db
- Using Tags Instead of Categories for site structure
- Use Mail-Tag from Contac Form 7 in a script
- Line break before headings () appears from nowhere
- Tidy HTML formatting in Gutenberg HTML blocks
- Unable to autoplay and loop a cinemagraph from Imgur
- standard callback function for wp_list_comments
- How to replace a specific html tag in bulk?
- Inserting code into a page just shows raw HTML
- WordPress adds ‘noindex’ tag to search results. Anything I can do about it?
- How can we get Buddypress to interpret HTML entities correctly?