I want to use a info box (similar to this example) on my ghost site. Preferably something with an icon. I found a little hack by using an HTML card:
<pre> <code> Spoiler alert: All problems were solved. </code> </pre>
The problem with the hack: it does not look very clean as you see in this screenshot:
Is there a cleaner way? I saw that there where a couple of similar topics by user gregpozo on this forum. But all the links pointed to a dead website. 
I use Ghost 3.41.3 with dawn theme that’s running on a Fastcomet server.