advent 4 domain explained and os added

content/u/advent-calendar/04/contents.lr

@@ -22,7 +22,7 @@ headline2: 10% off
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 headline3: Zero Carbon Cloud 100GB
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-content1_image: /assets/u/image/zerocarbon-yes.jpg
+content1_image: zerocarbon-yes.jpg
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 content1_text: 
 
@@ -32,9 +32,10 @@ You can order our Zero Carbon Cloud 100 GB plan for a year with 10% discount. On
 
 ## About the product
 
-- Nextcloud 
+- Nextcloud instance
+- Suitable for MacOS, Linux, Windows, and on mobile and tablet. 
 - 1 year subscription
-- 1 free IPv6 VPN is included for increased security
+- 1 IPv6 VPN is included for increased security
 - Enhanced security by limiting access to only your devices
 - Fully scalable storage and backup
 - Unlimited bandwidth under fair use policy
@@ -50,7 +51,9 @@ You can order our Zero Carbon Cloud 100 GB plan for a year with 10% discount. On
 
 ## How to buy it
 
-You can order from the following link and.
+You can order from the following link and write us the domain name you want for the cloud to support at datacenterlight.ch
+
+You can choose any domain name for your cloud under our domains glarner.cloud or 0co2.cloud for free, for example myname.glarner.cloud or myname.0co2.cloud. 
 
 Our team will set up the cloud in 1 business day and give you the access.