Please replace what @nico gave you with this code.
.x-ul-tags li {
display: inline-block;
margin: 10px
}
.x-ul-tags li a {
border-top: 0;
}
Here’s what it will look like.

The Ethos tags was designed that way because it’s original display is in the sidebar. Since we used custom CSS to modify it, issues arising from the use of the custom code and further enhancements would be outside the scope of our support.
We do have an in-house custom development team that offer paid services, who may be able to assist. They can be contacted at [email protected] if this is of interest to you.
Thank you for your understanding.