Have you changed the code?
To set color of header:

.header-wrapper, .page-wrapper .header .container, .page-wrapper .main-nav .container {
    background-color: black;
}

Regards

Hello,

You can use backend or fronted editor of WPBakery Page Builder – https://image.prntscr.com/image/mLKHHSd0QqK3U-KsPGqLoA.png
https://wpbakery.com/video-tutorials/

Regards

If you added custom css code in Theme Options > Custom css, please note that from the 4.0 update, all the custom styles come not like inline CSS but as styles from separate file – dynamic.css (to speed up the site loading). If you created child theme before 4.0 update, you need to create the dynamic.css file in royal-child theme folder and set permissions 777 for the file + add wp_enqueue_style( 'dynamic-css', get_stylesheet_directory_uri() . '/dynamic.css' ); in royal-child/functions.php file. Then go to Theme Options and re-save them.
Do not forget to clear cache before checking the result.

Regards

Hello,

Please provide me URL to page with the problem.

Regards

Also, please, use this code to change bg color of header:

.header-wrapper, .page-wrapper .header .container, .page-wrapper .main-nav .container {
    background-color: black;
}

Regards

Here is our documentation about menu – https://www.8theme.com/documentation/xstore/menu-set-up/
In 4.16 theme version Menu options were moved into popup https://image.prntscr.com/image/5yXyaVh9QG_srPw4jpVEdw.png so to be able to see all menu settings, you need to click on “8Theme Page Options”.

Regards

Hello,

What version of theme and woocommerce do you use?
Did you make changes in template files? Do you use child theme? Do you have the same problem with parent theme activated on site?
Have you tried to disable all 3rd party plugins?

Regards

Hello,

Please change Line Height – https://image.prntscr.com/image/7e_PMwmSR7O6HXYAjnu1Bg.png

Regards

Hello,

.price
http://prntscr.com/jv7ag8 – single product (.product-information .price, .product-info-wrapper .price, .product-summary-center .price)
http://prntscr.com/jv7aox – shop page (.content-product .price)
If this is not what you are looking for, please, describe your question in more details.

Regards

Hello,

This custom css code

.product-information .email-link {
   display: none;
}

should work fine.
Did you add the code in Custom css of Theme Options or in style.css file of child theme? Have you cleared cache before checking the effect of the code?

Regards

Hello,

I am glad that you sorted out.
Feel free to ask if you have any other questions.

Regards

Hello,

You need to delete or change this code – http://prntscr.com/jv70c1

Regards

Hello,

Do you have the same problem with parent theme activated on site?
Have you tried to disable all 3rd party plugins?

Regards

Please, clear cache and check one more time http://prntscr.com/juyq4u

Regards

Go to Appearance > Install Plugins > update 8theme Core plugin.

Regards