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<basefont> : base font size
Defines the base that relative font changes are based on.
-) size
Deprecated. This attribute sets the size of the font. Possible values:
An integer between 1 and 7. This sets the font to some fixed size, whose rendering depends on the user agent. Not all user agents may render all seven sizes.
A relative increase in font size. The value "+1" means one size larger. The value "-3" means three sizes smaller. All sizes belong to the scale of 1 to 7.
-) color
Deprecated. This attribute sets the text color.
-) face
Deprecated. This attribute defines a comma-separated list of font names the user agent should search for in order of preference.

<basefont size="3" color="red" face="arial">

For complete reference see html reference at W3C
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