source/misc/embedded_libs/fmt-8.1.1/doc/bootstrap/mixins/nav-vertical-align.less
browsing at commit = 7d88cb3813700a078de44f3373b18ccd8939a9fd
// Navbar vertical align
//
// Vertically center elements in the navbar.
// Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin.
.navbar-vertical-align(@element-height) {
margin-top: ((@navbar-height - @element-height) / 2);
margin-bottom: ((@navbar-height - @element-height) / 2);
}