SOURCE

<div class="mal_40 mat_20">
  <a class="breadcb" href="#">
    首页
    <span class="bread">
      —
    </span>
  </a>
  <a class="breadcb" href="#">
    二级菜单
    <span class="bread">
      —
    </span>
  </a>
  <a class="breadcb" href="#">
    三级菜单
    <span class="bread">
      —
    </span>
  </a>
  <a href="#">
    正文
  </a>
</div>

a {
  text-decoration: none;
  color: #fff;
}

a {
  color: #666;
}

.bread {
  padding: 0 6px;
}

.breadcb {
  color: #333;
}

.breadcb:hover {
  color: #49c8f2;
}

.breadcb:hover .bread {
  color: #333;
}