Hey @Alessio_lupatelli,
Welcome to the Blocs Forum.
You can do this with a bit of JavaScript in the page footer
Change the 3 Var’s to suit. Change the URL for logoTwo
and set how far you want to scroll before they change. It is in pixels.
EDIT: Made it so the first logo is what ever you set in Blocs.
<script>
var logoOne = $('.navbar-brand').find('img').attr('src');
var logoTwo = 'https://via.placeholder.com/60'
var scrollDistance = '200'
window.addEventListener('scroll', function() {
if ($(this).scrollTop() < scrollDistance) {
$('.navbar-brand img').attr('src',logoOne);
}
if ($(this).scrollTop() > scrollDistance) {
$('.navbar-brand img').attr('src',logoTwo);
}
})
</script>