Hi there,
1. This looks to be an issue with the structure of the slider. Each slide is a link, but it’s set to 67×12 for the size: http://prntscr.com/n4vssb
That might be something you need to ask meta slider about.
2. Looks like the slider has padding set to the bottom. You can remove it with this CSS:
.ms-theme-cubic {
padding-bottom: 0;
}
The rest of the space is your Separating Space option. You can remove it like this:
.right-sidebar.separate-containers .site-main {
margin-top: 0;
}