Square brackets in css

[pdxSherpa]

I run into this type of code,

input[type="search"]{
box-sizing:borderbox;
width:100%;
}

Am specifically curious about the parts. is it only good for input css or how else could it be useful?
thx
D

[ralphm]

Check out this article on attribute selectors.

[felgall]

@pdxSherpa

is it only good for input css

No you can use it for any tag that can have attributes in order to specify the attribute and optionally the value or part of the value that attribute must have

[pdxSherpa]

Thank you all. & thx Ralp will go check out that link, was not even sure what they were called.
D