Change to gray font color

Hello

How do I change the font color in section Jumbotron-> Entry from white to gray?

Note:
I don’t have any knowledge in code or this so called “child theme”
I don’t know any of this, so I kind of need a step-by-step explaination.

Thank you in advance

Hello,

This it the code to change the Jumbotron entry text color:

#header .bottom-header p {
    color: grey;
}

Like you said, the code should be placed in a child’s theme stylesheet.css, ideally.
But you can use always use an easier workaround to handle CSS via a custom CSS plugin or by place it inside Dashboard > Appearances > Editor > Style.css

Let me know if you got it alright.

Regards