Posture conveys a great deal, making a word, phrase or heading seem active or static, serious or whimsical. Type posture refers specifically to the angle at which the type is set. Italic type, as you know, slants to the right and, like bold, emphasizes text. Oblique is a similar, but slightly more rigid, electronic type form. Type is measured in a variety of ways, including points or pixels.
Web based-type has limitations on size.
The differences in screen resolutions, platforms, and browser rendering capabilities mean that there's a lot of variation in the way type is displayed on a screen. So while size always matters, Web designers have their work especially cut out for them when they try to use markup to work with type. The proportions of any given typeface compared to another are important. Proportional relationships help indicate what role each typeface plays on a page. The direction in which your typeface runs significantly impacts the way the type is perceived.