Hi Javier,
The margin is added by the container element (salien builder) from this CSS rule:
.wpb_wrapper>div {
margin-bottom: 24px;
}To negate the effect, use this custom CSS:
.asp_w_container {
margin-bottom: 0 !important;
}Also, if there is further space, you can reduce it here: https://i.imgur.com/AOi1T1l.png
