Hi cemsdb,
You can duplicate the topbar left module to custom the menu on the topbar with the HTML/CSS. However, if you want to use the Menu Module. After creating the menu module for the Topbar position, you can add the following CSS code to the "‎/templates/ja_morgan/local/css/themes/style-2/template.css"
The file to resolve the items is shown vertically.
.topbar-left {
display: flex;
}
.topbar-left ul.nav li {
display: inline-block;
}
.topbar-left ul.nav li a:hover {
color: #000;
background: transparent;
}
.topbar-left ul.nav li a {
color: #999;
}
Hope this help!