// 下拉框的总的样式/deep/.ant-select-dropdown-menu {background: #091F40;border: 1px solid rgba(122, 191, 255, 0.2);box-shadow: 0px 2px 12px rgba(0, 0, 0, 0.2);border-radius: 2px;height: 200px;}// 下拉框 每个item的样式/deep/.ant-select-dropdown-menu-item {font-weight: 400;font-size: 14px ;color: #BEE1FF ;}/deep/.ant-select-dropdown-menu-item:hover {background: linear-gradient(90deg, rgba(27, 139, 243, 0.3) -0.14%, rgba(27, 139, 243, 0) 99.86%);}// 下拉菜单 选中的效果/deep/.ant-select-dropdown-menu-item-selected {color: #fff ;background: linear-gradient(90deg, #1B8BF3 -0.14%, rgba(27, 139, 243, 0) 99.86%);}// 下拉菜单 经过的效果/deep/.ant-select-dropdown-menu-item-active {background: linear-gradient(90deg, #1B8BF3 -0.14%, rgba(27, 139, 243, 0) 99.86%);}
修改的效果：
