Fixing Error of WordPress rss Feed [closed] - wordpress

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I have this website http://www.example.co.id/feed/
can you help me to fix the error

It's most commonly caused by a Blank line before XML declaration
you can see:
view-source:http://www.example.co.id/feed/

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What does --hue mean in css? [closed]

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Closed 1 year ago.
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css from a tutorial
I'm trying to understand this from a tutorial I'm watching on youtube, but I can't seem to understand it.
--hue is a CSS variable.
The code --hue: var(--hue-correct) is setting the CSS variable --hue to the value of the variable --hue-correct (e.g. 145)
For more information, see: https://www.w3schools.com/css/css3_variables.asp

glyphicon- the icon doesn't work [closed]

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Closed 7 years ago.
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I have to use the glyphicon-calendar.
For some reason I can't see it.
I noticed that I got error in the $(document).ready(function(){})
Attached jsfiddle
I had this issue initially and fixed it by downloading the latest bootstrap files which includes the glyphicon font.
http://getbootstrap.com/getting-started/#download

What does hero unit mean? [closed]

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Closed 9 years ago.
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I just generated an app using Yeoman and in the view there is a div with the class hero-unit. I figure this is a pretty popular question and Google doesn't get me anything remotely relevant other than this question also on StackOverflow, which I wish had more discussion.
So, what does it mean?

How to add embeded youtube video record to symfony application [closed]

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Is there an easy way to add embeded youtube video record to your symfony 2.3 application?
Just follow these steps https://support.google.com/youtube/answer/171780?hl=de and copy the embed code as raw HTML to one of your twig templates.

How can we create a popup window for placing shortcodes in wordpress editor [closed]

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Closed 9 years ago.
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Can anyone please tell me how can we create a popup window for placing shortcodes in the WordPress editor?
Use this link to solve your problem
http://codex.themedelta.com/how-to-create-a-popup-window-for-shortcodes-in-wordpress-editor/

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