How to refer in CSS to all elements that have some attribute ?

Question

I know that [my_attr='my_value'] refers to all elements which have attribute my_attr with value my_value.

Is that possible to refer to all elements which have my_attr attribute (no matter what the value is) ?

Answer 1

element[attr]

That should do it.

Answer 2

Use [my_attr] alone:

[att] Represents an element with the att attribute, whatever the value of the attribute.