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Bootstrap/less/dropdowns.less

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// DROPDOWN MENUS
// --------------
// Use the .menu class on any <li> element within the topbar or ul.tabs and you'll get some superfancy dropdowns
.dropup,
.dropdown {
position: relative;
}
.dropdown-toggle {
// The caret makes the toggle a bit too tall in IE7
*margin-bottom: -3px;
}
.dropdown-toggle:active,
.open .dropdown-toggle {
outline: 0;
}
// Dropdown arrow/caret
// --------------------
.caret {
display: inline-block;
width: 0;
height: 0;
vertical-align: top;
border-top: 4px solid @black;
border-right: 4px solid transparent;
border-left: 4px solid transparent;
content: "";
.opacity(30);
}
// Place the caret
.dropdown .caret {
margin-top: 8px;
margin-left: 2px;
}
.dropdown:hover .caret,
.open .caret {
.opacity(100);
}
// The dropdown menu (ul)
// ----------------------
.dropdown-menu {
position: absolute;
top: 100%;
left: 0;
z-index: @zindexDropdown;
display: none; // none by default, but block on "open" of the menu
float: left;
min-width: 160px;
padding: 4px 0;
margin: 1px 0 0; // override default ul
list-style: none;
background-color: @dropdownBackground;
border: 1px solid #ccc;
border: 1px solid rgba(0,0,0,.2);
*border-right-width: 2px;
*border-bottom-width: 2px;
.border-radius(5px);
.box-shadow(0 5px 10px rgba(0,0,0,.2));
-webkit-background-clip: padding-box;
-moz-background-clip: padding;
background-clip: padding-box;
// Aligns the dropdown menu to right
&.pull-right {
right: 0;
left: auto;
}
// Dividers (basically an hr) within the dropdown
.divider {
.nav-divider(@dropdownDividerTop, @dropdownDividerBottom);
}
// Links within the dropdown menu
a {
display: block;
padding: 3px 15px;
clear: both;
font-weight: normal;
line-height: @baseLineHeight;
color: @dropdownLinkColor;
white-space: nowrap;
}
}
// Hover state
// -----------
.dropdown-menu li > a:hover,
.dropdown-menu .active > a,
.dropdown-menu .active > a:hover {
color: @dropdownLinkColorHover;
text-decoration: none;
background-color: @dropdownLinkBackgroundHover;
}
// Open state for the dropdown
// ---------------------------
.open {
// IE7's z-index only goes to the nearest positioned ancestor, which would
// make the menu appear below buttons that appeared later on the page
*z-index: @zindexDropdown;
& > .dropdown-menu {
display: block;
}
}
// Right aligned dropdowns
// ---------------------------
.pull-right .dropdown-menu {
right: 0;
left: auto;
}
// Allow for dropdowns to go bottom up (aka, dropup-menu)
// ------------------------------------------------------
// Just add .dropup after the standard .dropdown class and you're set, bro.
// TODO: abstract this so that the navbar fixed styles are not placed here?
.dropup,
.navbar-fixed-bottom .dropdown {
// Reverse the caret
.caret {
border-top: 0;
border-bottom: 4px solid @black;
content: "\2191";
}
// Different positioning for bottom up menu
.dropdown-menu {
top: auto;
bottom: 100%;
margin-bottom: 1px;
}
}
// Typeahead
// ---------
.typeahead {
margin-top: 2px; // give it some space to breathe
.border-radius(4px);
}