How to select multiple ids in CSS?

Question

How can I select multiple IDs in CSS? For example:

#test_id_*{

}

<div id="test_id_10"></div>
<div id="test_id_11"></div>

Answer 1

Use an attribute selector on the id attribute:

[id^='test_id_'] { color: red; }

Description:

[attr^=value] represents an element with an attribute name of attr and whose first value is prefixed by "value".

Answer 2

To use one css for multiple id or class, you need to separate them with ,

#test_id_10,
#test_id_11
{
    //some style
}