.wp-site-blocks > * + * {
    margin-block-start: 0rem;
}

/* Make the global site background fully transparent 
.site,
body,
.site-wrapper {
  background-color: transparent !important;
}

/* Optional: If individual sections also use background, override them too 
.wp-block-template-part,
.wp-block-library,
body {
  background: transparent !important;
}
/*  end */