Gadget-NavboxStyle.css

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/* Navbox template CSS */

/* Halo/Destiny styles */
.navbox-title,
.navbox-title a,
.navbox-title span {
	color: white !important;
}
.navbox-title.light,
.navbox-title.light a,
.navbox-title.light span {
	color: black !important;
}
.navbox-group a {
	color: inherit !important;
}
body:not(.skin-minerva) .navbox-title {
	padding-right: 5px;
}
.navbox {
	clear: both;
	border-spacing: 0;
	border-radius: 0.5em !important;
	margin: 15px auto 2px !important;
}
.navbox table {
	border-spacing: 0;
}
.navbox p {
	margin: 0 !important;
}
.navbox:last-of-type {
	margin-bottom: 0 !important;
}
.navbox .navbox {
	margin: 0 auto !important;
}
.navbox + .navbox-heading + .navbox,
.navbox + div + p + .navbox, 
.navbox + p + .navbox,
.navbox + .navbox {
	margin-top: 0 !important;
}
.navbox .navbox + .navbox,
.mobile.skin-timeless .navbox + .navbox {
	margin-top: 2px !important;
}
.skin-timeless .navbox-title {
	padding-bottom: 0 !important;
}
.skin-timeless .navbox td {
	padding-top: 0 !important;
}
.navbox .center-template {
	margin: 0 !important;
}

MediaWiki:Gadget-NavboxStyle.css