Hi @terautibee
You can reduce the spacing of the main body with the following custom CSS:
@media (min-width: 1200px) {
.t4-main-body {
padding-bottom: 4rem;
padding-top: 4rem;
}
}
For the submenu issue, you can add the following custom CSS
#t4-header {
z-index: 999;
}
If you need further assistance, please feel free to let me know.