how to change font style to google in js code example

Example 1: import google font css

@import url('https://fonts.googleapis.com/css?family=Open+Sans&display=swap');
.generic_class {
	font-family: 'Open Sans', sans-serif;
}

Example 2: font for css code google link

@import url(https://fonts.googleapis.com/css?family=Open+Sans);

body{
   font-family: 'Open Sans',serif;
}