Shadow on menu items?

I can’t say that its normal, however it is what your theme has set for widget lists, list items and anchors.

And yes, you can change it.

Exactly how you would go about changing it depends on your knowledge of CSS, the facilities possibly offered by your theme, and/or your understanding of WordPress. I’m guessing that you’re probably not running a child theme – which might make things a bit trickier, because if you changed the theme’s stylesheet you’d risk losing the changes if/when the theme was updated. You could investigate creating a child theme? Or you might consider a plugin that would allow you to put CSS directly into WordPress: CSS & Javascript Toolbox might be one such (there are undoubtedly others, and they may even be better suited, but that one sprang to mind)? If you need to add classes or an id to CMW, to assist with the styling, you can easily do so.

Thx for your response, I have no knowledge of CSS, but I have a child theme for this theme.
I already changed the shadow for some headers, with help from other people.
The headers from the widgets als had a white shadow but that was solved with:
h1, h2, h3, h4, h5, h6 {
text-shadow: 0 0px 0 transparent;
}
of course in the Child Theme.
Maybe there is someone who reads this who can help me out.
For sure I will look for the plugins you mentioned.
Maybe they can help.

Add these to your child theme’s stylesheet:

.widget_custom_menu_wizard li,
.widget_custom_menu_wizard li:after {
    border-bottom: 0 none !important;
}
.widget_custom_menu_wizard li a {
    text-shadow: 0 0 0 transparent !important;
}

SUPERRRRR!!!!!
Thank you so much!

If you do not mind could you explain what it does?
I understand that you use the name of the widget you use and that li means list.
border bottom none means no line under the link?
and the last part is to tell that there should be no shadow, am I write?

I am 64, but I suppose it is no a bad idea to learn how to use CSS?
Can you advise me how I could do that. Are there sites to do that?

And how long should it take? Forgetting that I am already so old. haha
I was a programmer in the past, many years ago: Cobol
But this is so different.

But thx again, you helped me a lot.

CSS Tutorials
Learning CSS

Thx Esmi, let me see and try if my brain is still ok, haha

Enjoy the weekend.