Video caption link

Site URL: https://www.pivotsaas.com/camio

I am trying to convert the black link show in the attached image to a color like yellow. I don't need hover etc., just a color that will stand out from the red background. I only want the link color to be different in this particular caption.

This is what I am using (after trying others), but it has no effect.

#yui_3_17_2_1_1603812265295_400 p a {color: yellow;}

Can anyone advise as to why this isn't working? Is it not possible to apply ID CSS in an individual caption box? 

Thanks in advance!

Use this CSS

.video-block a {
    color: violet;
}