SiteOrigin CSS Editor – Changes not taking effect

Hi there,

I want to stylize my different headers (H1, H2, H3, H4). I created a test page showing each of these header types, used the SiteOrigin CSS Editor, hit save and nothing has happened.

The resulting css looks like this:
______

}

.entry-content > *:first-child {
text-transform: capitalize;
}

.entry-content h2 {
color: #0b5193;
}

.entry-content h3 {
color: A7A9AC;
}

.entry-content h4 {
color: 69BD45;
}

_____

I tried simplifying the code to omit .entry-content but nothing happened.

What am I missing here?