Changes

navbar-mini is never a span, and span doesn't have all the stuff that needs resetting
/* {{pp|small=yes}} */
.navbar {
display: inline;
font-size: 88%;
font-weight: normal;
}

.navbar-collapse {
float: left;
text-align: left;
}

.navbar-boxtext {
word-spacing: 0;
}

.navbar ul {
display: inline-block;
white-space: nowrap;
line-height: inherit;
}

.navbar-brackets::before {
margin-right: -0.125em;
content: '[ ';
}

.navbar-brackets::after {
margin-left: -0.125em;
content: ' ]';
}

.navbar li {
word-spacing: -0.125em;
}

.navbar-mini abbr {
font-variant: small-caps;
border-bottom: none;
text-decoration: none;
cursor: inherit;
}

.navbar-ct-full {
font-size: 114%;
margin: 0 7em;
}

.navbar-ct-mini {
font-size: 114%;
margin: 0 4em;
}

/* Navbar styling when nested in infobox and navbox
Should consider having a separate TemplateStyles for those specific places
using an infobox/navbox and a navbar, or possibly override from using template */
.infobox .navbar {
font-size: 100%;
}

.navbox .navbar {
display: block;
font-size: 100%;
}

.navbox-title .navbar {
/* @noflip */
float: left;
/* @noflip */
text-align: left;
/* @noflip */
margin-right: 0.5em;
}
Anonymous user