Hi Ondrej,
Thanks for reaching out.
It seems that the text shadow attribute of the widget class is responsible for that, please add a small piece of custom CSS code into Theme Options > CSS to get rid of this.
.ubermenu_navigation_widget-class.widget
{
text-shadow:none;
}
Remember that the above code will work if copied as it is and don’t conflict with any existing style.
Please note that the code provided serves only as a guide to help you get started custom coding on your own if there’s no option offered in our theme or the products we bundle.
We do not provide support for custom codes that means we can’t fix it in case it conflicts with something on your site nor will we enhance it.
Thanks