what does a media query do code example

Example 1: media query in css

@media screen and (min-width: 374px){
   section#rent_sectionn {
    padding: 0 20px !important;
}
 }

Example 2: media query methods

1. @media print
{
p
{
font-family: georgia,montserrat;
}
}
2. <link rel="stylesheet" media="screen"
href="/css/screen_version.css">
3. @import "screenstyles.css" screen;