acub

No, it doesn’t.
This means that wp_safe_redirect() doesn’t work on your server.

Try

wp_redirect( get_site_url()."/intro");

or

header('Location: '.get_site_url().'/intro');

instead.

Just to make sure it’s not related to a faulty installation of your child theme, you should try to add an unconditioned redirect testing function to the end of functions.php from Customizr folder:

add_action( 'init', 'redirect_tester' );
function redirect_tester() {
		wp_safe_redirect( get_site_url()."/intro");
}

This should redirect you to /intro regardless of where you come from and regardless of what page you’re trying to see.
If this works, disable it and read documentation on how to create a child theme properly, because yours is wrong, as it doesn’t read the functions.php
If it doesn’t work, your server doesn’t allow redirects (try with wp_redirect() and header() too) and find out why. This is most likely a problem your hosting service provider could help with.

When you get to the bottom of this, try my initial code, it should work (it did for me, on my server, i just used something else instead of “/intro”, but this makes no difference).

Try changing get_site_url() with $_SERVER[‘SERVER_NAME’] inside the strpos

add_action( 'init', 'cncf_ie_redirect' );
function cncf_ie_redirect() {
	$request = $_SERVER["REQUEST_URI"];
	$referer = wp_get_referer();
	if ((!$request || ($request == '') || ($request == '/'))&& ( (!$referer) || ($referer && (strpos($_SERVER['SERVER_NAME'], $referer) !== false)))) {
		wp_safe_redirect( get_site_url()."/intro");
	}
}

If this doesn’t work it means the function is never run. Is your child theme activated?
The quickest way to see if the function is run is eliminate the conditional:

add_action( 'init', 'cncf_ie_redirect' );
function cncf_ie_redirect() {
//	$request = $_SERVER["REQUEST_URI"];
//	$referer = wp_get_referer();
//	if ((!$request || ($request == '') || ($request == '/'))&& ( (!$referer) || ($referer && (strpos($_SERVER['SERVER_NAME'], $referer) !== false)))) {
		wp_safe_redirect( get_site_url()."/intro");
//	}
}

This should redirect you to /intro regardless of what page you try to see. If this works, the function runs. so you need to put one condition before the redirect:

function cncf_ie_redirect() {
	$request = $_SERVER["REQUEST_URI"];
//	$referer = wp_get_referer();
	if (($request == '/') || ($request == '')) {
		wp_safe_redirect( get_site_url()."/intro");
	}
}

than put the second condition… and so on…

For all I can see, either the function is never run or the conditions aren’t met.
Are you sure you added

add_action( 'init', 'cncf_ie_redirect' );

in your functions.php of your child theme? Make sure it’s not inside another function.
To make sure it runs, remove the conditional alltogether and test the redirect, than, if it works, put the conditions back one by one until you find which one changing the expected behavior.

Ok, just read your test results above. Replace

($request == '/')

with

(!$request || ($request == '') || ($request == '/'))

It should do the trick.

But you shouldn’t run the test through the theme editor.

Try

($request === '') // instead of ($request == '/')

… but maybe you should make some tests and see why conditions aren’t met.
Here’s how to test:
From customizr options select static page as a front page. In that static page, at the start of content put this shortcode: [tester-function]

And add this function in your functions php:

add_shortcode('tester-function', 'tester_function');
function tester_function() {
	if (current_user_can('update_core')) {
		$referer = wp_get_referer();
		echo '$'.'referer = '.var_dump($referer);
		$request = $_SERVER["REQUEST_URI"];
		echo '<br />$'.'request = '.var_dump($request);
		echo '<br />get_site_url() = '.get_site_url();
		}
	}

This should output $referer, $request and the output of get_site_url() for you at the start of home page (under the circles), and you should be able to realize why conditions aren’t met.

Here’s the if explained: if ((not mobile) and (user requested homepage) and (no $referer or ($referer and $referer contains get_site_url())).

My advice is not to change the redirect based on the device, but rather find a solution to compensate the lack of autoplay on mobile devices (use a background image fallback). You’re going to need this fix anyway, since your /intro is available through menu for mobile devices too, right? Unless you hide it for them, as well.

However, if that’s your chosen solution replace the if above with:

if ((!wp_is_mobile()) && ($request == '/') && ( (!$referer) || ($referer && (strpos(get_site_url(), $referer) !== false)))) {
		wp_safe_redirect( get_site_url()."/get-involved");
	}

Maybe there is a way to do it the way you want, but here’s my suggesstion:

1. Put your video-background layout at http://cncf.ie/get-involved
2. Add this function in your child theme’s functions.php (if you add it in Customizr’s functions.php you’ll lose it on theme upgrade. Please read about how to make a child theme on Customizr’s FAQ list if you don’t know how to do it.):

add_action( 'init', 'cncf_ie_redirect' );
function cncf_ie_redirect() {
	$request = $_SERVER["REQUEST_URI"];
	$referer = wp_get_referer();
	if (($request == '/') && ( (!$referer) || ($referer && (strpos(get_site_url(), $referer) !== false)))) {
		wp_safe_redirect( get_site_url()."/get-involved");
	}
}

How it works: your homepage (http://cncf.ie) is the circles layout. However, anyone trying to reach it, if they come from outside the website, will get redirected to http://cncf.ie/get-involved, where your video-background layout should be. If someone comes from outside to any another page of your website (other than the website URL), they will not be redirected. The redirect is in place only for first page and only if you’re coming from outside the website. (Should behave the same with or without www in your links).

Does this solve your problem?

#footer {
font-size: 14px;
}
#footer .colophon{
font-size: 11px;
}

Play with the numbers until you get it the way you want (#footer .colophon affects the text outside the widget areas, while the #footer affects everything else). Also, remove the

#footer .footer-widgets {
font-size: larger;
}

declaration I suggested above.

What plugin have you updated, AliG2?