Attribute selectors have specificity same as class selector and pseudo class.
0-1-0
Here is W3's guide on Calculating a selector’s specificity: w3.org
Quoting W3 guide here,
A selector’s specificity is calculated for a given element as follows:
count the number of ID selectors in the selector (= A)
count the number of class selectors, attributes selectors, and pseudo-classes in the selector (= B)
count the number of type selectors and pseudo-elements in the selector (= C)
ignore the universal selector
Examples
*[type=radio] // 0-1-0
.class_name input[type="text"] { } // 0-2-1
attributes css selectors pseudo-elements Specificity
