about Roboto font code example

Example 1: roboto font

@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');

body {
  font-family: 'Roboto', sans-serif;
}

Example 2: roboto font embed

<link rel="preconnect" href="https://fonts.gstatic.com">
<link href="https://fonts.googleapis.com/css2?family=Roboto&display=swap" rel="stylesheet">