# WebRoot/admin/lib/lib/font-awesome/docs/assets/less/twbs-203/dropdowns.less

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

// 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);