/*公共样式*/


.header .header-ul li{ margin: 0 2rem; }
.header .header-ul li a{ font-size: 1rem;letter-spacing: 0.1rem; }
/* 鼠标悬停时展开子菜单 */
.header .header-ul > li:hover .menu-children { max-height: 30rem;display: block;  transition: max-height 0.3s ease-in; }