Hi,

Use Ventura "Custom CSS" option in Appearance and and put there something like:

.block.block_totara_featured_links {

border-radius: 5px;

margin-left: 15px;

}

For specific block:

#inst192.block.block_totara_featured_links {

/* Iinstance ID need to fit your block */

…

}

Or you can target css to page type (dashboard) and region (left) etc to make it more general 🙂