Custom CSS not overriding Vantage Headline Widget color

I want to change the color of the subheading in the headline widget. When I inspect the code I see that the color is pulled from this code:

.entry-content h1, .entry-content h2, .entry-content h3, .entry-content h4, .entry-content h5, .entry-content h6 {
color: #e59100;
}

In my Custom CSS I have tried to input many different things, but nothing works. This is an example of something that does not work:

.widget_headline-widget .entry-content h3  {
		color: #666666;
}

and

.widget_headline-widget h3  {
		color: #666666;
}

and

.entry-content h3  {
		color: #666666;
}

With and without !important. I don’t know what I need to input to change the color on just the subheading, in only that widget, only on the home page?

Thanks.