在CSS中将ID与类别相关联

问题描述：

我可以在CSS中做些聪明的事情来指示具有特定ID的元素应始终使用一个或多个类吗?像这样:

Is there something clever I can do in CSS to indicate that an element with a particular ID should always use one or more classes? Something like:


#user_info_box {
    use-class: ui-widget-content ui-corner-all;
    position: fixed;
    left: 10px;
    ...
}

只有您知道，使用的是实际有效的CSS属性.

Only, you know, using actual valid CSS properties.

答

LESS 非常适合.具体来说，请参见"mixins".

LESS is perfect for this. Specifically, see "mixins".

#user_info_box {
    .ui-widget-content;
    .ui-corner-all;
    position: fixed;
    left: 10px;
    ...
}