Page Banner Macro - How do I change the background color and font color? As well as size?

[Jon Blue]

I am using the Page Banner macro and it always greys out my image. I've tried adding an HTML macro before the page banner and enter this: 

<style>

.composition-banner-overlay{

background-color:rgba(0,0,0,0);  } </style>

which changes the background color to white, which is great but my font for the title and description is no longer readable. So how do I change the font in the page banner macro through HTML and how do I resize the page banner so it doesn't take up the entire screen?