layui/src/css/modules/nav.css

/** 导航菜单 **/
.layui-nav {
  position: relative;
  padding: 0 15px;
  background-color: var(--lay-color-black);
  color: #fff;
  border-radius: var(--lay-border-radius);
  font-size: 0;
  box-sizing: border-box;
}
.layui-nav * {
  font-size: 14px;
}
.layui-nav .layui-nav-item {
  position: relative;
  display: inline-block;
  margin-top: 0;
  list-style: none;
  vertical-align: middle;
  line-height: 60px;
}
.layui-nav .layui-nav-item a {
  display: block;
  padding: 0 20px;
  color: #fff;
  color: rgba(255, 255, 255, 0.7);
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
.layui-nav-bar,
.layui-nav .layui-this:after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 3px;
  background-color: var(--lay-color-accent);
  -webkit-transition: all 0.2s;
  transition: all 0.2s;
  pointer-events: none;
}
.layui-nav-bar {
  z-index: 1000;
}
.layui-nav[lay-bar='disabled'] .layui-nav-bar {
  display: none;
}
.layui-nav .layui-this a,
.layui-nav .layui-nav-item a:hover {
  color: #fff;
  text-decoration: none;
}
.layui-nav .layui-this:after {
  top: auto;
  bottom: 0;
  width: 100%;
}
.layui-nav-img {
  width: 30px;
  height: 30px;
  margin-right: 10px;
  border-radius: 50%;
}

.layui-nav .layui-nav-more {
  position: absolute;
  top: 0;
  right: 3px;
  left: auto !important;
  margin-top: 0;
  font-size: 12px;
  cursor: pointer;
  -webkit-transition: all 0.2s;
  transition: all 0.2s;
}
.layui-nav .layui-nav-mored,
.layui-nav-itemed > a .layui-nav-more {
  transform: rotate(180deg);
}

.layui-nav-child {
  display: none;
  position: absolute;
  left: 0;
  top: 65px;
  min-width: 100%;
  line-height: 36px;
  padding: 5px 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--lay-border-color);
  background-color: #fff;
  z-index: 100;
  border-radius: var(--lay-border-radius);
  white-space: nowrap;
  box-sizing: border-box;
}
.layui-nav .layui-nav-child a {
  color: #5f5f5f;
  color: rgba(0, 0, 0, 0.8);
}
.layui-nav .layui-nav-child a:hover {
  background-color: #f8f8f8;
  color: rgba(0, 0, 0, 0.8);
}
.layui-nav-child dd {
  margin: 1px 0;
  position: relative;
}
.layui-nav-child dd.layui-this {
  background-color: #f8f8f8;
  color: #000;
}
.layui-nav-child dd.layui-this:after {
  display: none;
}
.layui-nav-child-r {
  left: auto;
  right: 0;
}
.layui-nav-child-c {
  text-align: center;
}

/* 垂直导航菜单 */
.layui-nav.layui-nav-tree {
  width: 200px;
  padding: 0;
}
.layui-nav-tree .layui-nav-item {
  display: block;
  width: 100%;
  line-height: 40px;
}
.layui-nav-tree .layui-nav-item a {
  position: relative;
  height: 40px;
  line-height: 40px;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}
.layui-nav-tree .layui-nav-item > a {
  padding-top: 5px;
  padding-bottom: 5px;
}
.layui-nav-tree .layui-nav-more {
  right: 15px;
}
.layui-nav-tree .layui-nav-item > a .layui-nav-more {
  padding: 5px 0;
}
.layui-nav-tree .layui-nav-bar {
  width: 5px;
  height: 0;
}
.layui-side .layui-nav-tree .layui-nav-bar {
  width: 2px;
}
.layui-nav-tree .layui-this,
.layui-nav-tree .layui-this > a,
.layui-nav-tree .layui-this > a:hover,
.layui-nav-tree .layui-nav-child dd.layui-this,
.layui-nav-tree .layui-nav-child dd.layui-this a {
  background-color: var(--lay-color-primary);
  color: #fff;
}
.layui-nav-tree .layui-this:after {
  display: none;
}
.layui-nav-tree .layui-nav-title a,
.layui-nav-tree .layui-nav-title a:hover,
.layui-nav-itemed > a {
  color: #fff !important;
}
.layui-nav-tree .layui-nav-bar {
  background-color: var(--lay-color-primary);
}

.layui-nav-tree .layui-nav-child {
  position: relative;
  z-index: 0;
  top: 0;
  border: none;
  background: none;
  background-color: rgba(0, 0, 0, 0.3);
  box-shadow: none;
}
.layui-nav-tree .layui-nav-child dd {
  margin: 0;
}
.layui-nav-tree .layui-nav-child a {
  color: #fff;
  color: rgba(255, 255, 255, 0.7);
}
.layui-nav-tree .layui-nav-child a:hover {
  background: none;
  color: #fff;
}

/* 垂直导航 - 展开状态 */
.layui-nav-itemed > .layui-nav-child,
.layui-nav-itemed > .layui-nav-child > .layui-this > .layui-nav-child {
  display: block;
}

/* 垂直导航 - 侧边 */
.layui-nav-side {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  overflow-x: hidden;
  z-index: 999;
}

/* 导航浅色背景 */
.layui-nav.layui-bg-gray .layui-nav-item a,
.layui-nav-tree.layui-bg-gray a {
  color: #373737;
  color: rgba(0, 0, 0, 0.8);
}
.layui-nav-tree.layui-bg-gray .layui-nav-itemed > a {
  color: #000 !important;
}
.layui-nav.layui-bg-gray .layui-this a {
  color: var(--lay-color-accent);
}
.layui-nav-tree.layui-bg-gray .layui-nav-child {
  padding-left: 11px;
  background: none;
}
.layui-nav-tree.layui-bg-gray .layui-this,
.layui-nav-tree.layui-bg-gray .layui-this > a,
.layui-nav-tree.layui-bg-gray .layui-nav-child dd.layui-this,
.layui-nav-tree.layui-bg-gray .layui-nav-child dd.layui-this a {
  background: none !important;
  color: var(--lay-color-accent) !important;
  font-weight: 700;
}
.layui-nav-tree.layui-bg-gray .layui-nav-bar {
  background-color: var(--lay-color-accent);
}

/** 面包屑 **/
.layui-breadcrumb {
  visibility: hidden;
  font-size: 0;
}
.layui-breadcrumb > * {
  font-size: 14px;
}
.layui-breadcrumb a {
  color: #999 !important;
}
.layui-breadcrumb a:hover {
  color: var(--lay-color-accent) !important;
}
.layui-breadcrumb a cite {
  color: #5f5f5f;
  font-style: normal;
}
.layui-breadcrumb span[lay-separator] {
  margin: 0 10px;
  color: #999;
}