Black transparent menu bar

My menu bar in the top is black like I put it but transparent in all browser except mine. I havent seen if its not transparent if I get out of admin but still how could I fix this?

Hi,

Did you mean that its happened when you scroll down the page?
and you want to make those black color transparent? If so, you can the following css code:

.site-header.float-header {
    background-color: rgba(0,0,0,0.7);
}

You can add the css code in above to styles.css in your child theme or use simple custom css plugin

No, thank you for responding my problem is that I see my page the way I want it while editing but once I enter firefox to check how it looks my black menu looks transparent or transparent black instead. regardless of if I score down or not.

Hi,

Could you please to post the URL of your site?