Post/Page heading not responding to h1 edits.

Hi, today I have learned a lot.
I’ve explored at least 3 ways to work with google fonts.
Currently I’m using Easy Google Font plugin, I’ve selected a number of fonts for p, h1, h2, h3 etc.

I’ve added to css an override for page & post titles

h1.site-title a {
   font-family: 'Tangerine', cursive;
}
entry-title,
.entry-title a {
     font-family: 'Tangerine', cursive;
}

neither work, and I’ve still got a heavy, bold, sans serif title.

I’ve read a sackful of forum threads, tried many edits. I’m a bit tired now and would very much appreciate a helping hand. ??