{font-family: Trebuchet MS, sans-serif;} // DejaVu Sans

{font-family: Helvetica, sans-serif;} // Nimbus Sans L

{font-family: Arial, sans-serif;} // Liberation Sans L

{font-family: Georgia, serif;} // DejaVu Serif

{font-family: "Times New Roman", serif;} // Liberation Serif

{font-family: Verdana, sans-serif;} // DejaVu Sans

• Liberation Serif is metrically equivalent font to Times New Roman (...) and (...) is used in some GNU/Linux distributions as default font replacement for Times New Roman.
• Although the characters are not exactly the same, Nimbus Sans L has metrics almost identical to Helvetica and Arial.