Check out example codes for "embed google font css". It will help you in understanding the concepts better.

Code Example 1

<!-- To Add Montserrat font or any font as such -->
<!-- Go to https://fonts.google.com browse the font you like here, Montserrat-->
<!-- On the right click embbed and get the link similar to one given below-->
<link href="https://fonts.googleapis.com/css2?family=Montserrat&display=swap" rel="stylesheet">
<!-- add this ^ link inside your <head> tag i.e. before </head> -->
<!-- In css you can specify the font family as -->
font-family: "Montserrat", sans-serif;

Code Example 2

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

Code Example 3

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

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