where to put google fonts link in html code example

Example 1: add google font html

<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Source+Code+Pro"> [Replace your font with the Source Code Pro font.]

Example 2: 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 3: embed google font css

<link rel="stylesheet" href="//fonts.googleapis.com/css?family=Open+Sans:300,400,600,700&lang=en" />

Example 4: use google font in html

body {
    font-family: '*Insert google font';font-size: 22px;
}

Example 5: how to setup google fonts in html and css

font-family: '<custom_font_you_selected>', <fallback_font>