| Name | Deprecated | Alternative |
|---|---|---|
| applet | Y | Use object |
| basefont | Y | Specify base font size in CSS; don't specify base font size at all |
| center | Y | Use text-align: center in CSS for inline elements; set explicit margins in CSS for block level elements |
| dir | Y | Use ol or ul; define font in CSS if required |
| font | Y | Use CSS |
| iframe | N | Consider using object; iframe is not deprecated, but does not appear in the strict DOCTYPE |
| isindex | Y | use input |
| menu | Y | Use ol or ul; define font in CSS if required |
| s | Y | Use text-decoration: strike-through in CSS |
| strike | Y | Use text-decoration: strike-through in CSS |
| u | Y | Use text-decoration: underline in CSS |