css font-family system code example

Example 1: font family system

/* System Fonts as used by GitHub */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

Example 2: font family css

font-family: "Comic Sans MS", cursive, sans-serif;