Change post's title font

Can you link to a page that has the post’s title, for context?

https://www.analiticocorporal.com/psicoterapia/
https://www.analiticocorporal.com/terapia-analitico-corporal/
https://www.analiticocorporal.com/quienes-somos/
https://www.analiticocorporal.com/contacto/
https://www.analiticocorporal.com/masaje-terapeutico-y-relajante/

Add this:

.entry-title, .entry-title a {
 /* Font stuff goes here */
}

What do you mean with font stuff (the font that I want is Nunito)

You know that font stuff you added before:

font-family: 'Nunito';

?
That goes in there:

.entry-title, .entry-title a {
 font-family: 'Nunito';
}

Didn’t work.

You need to be extra careful when adding code to your style.css file, at the moment you have this:

#post-124 {
	width: 130px;
	height: 130px;

#post-124,
#post-139 {
 margin-top: 35px;
}

It needs to be this:

#post-124 {
	width: 130px;
	height: 130px;
}
#post-124,
#post-139 {
 margin-top: 35px;
}

You need to make sure the syntax is proper, otherwise all CSS that comes after the syntax error will break.
https://www.w3schools.com/css/css_syntax.asp

Now it did work! I’m getting an expert! Thank you again and again.