Hello @giancaa,

In order to remove the cloud please add below given CSS by going to Admin Panel > Appearance > Customize > Additional CSS.

header.site-header,
#masthead.fixed-header.is-sticky  {
	background: none;
	background-color: #fff;
}

.site-branding {
	background: none;
}

Hope this helps.

Best Regards!!

Hello @giancaa,

Glad we could help you.

Let us know if you have any issues further.

Also, we would really appreciate if you could help us by rating our theme by following the link given below:

https://wordpress.org/support/theme/kids-education/reviews/#new-post

Thank you.

Best Regards!!