W3CのVisual formatting modelにあたる箇所。

display : inline | block | list-item | run-in | inline-block | table | inline-table | table-row-group¥

| table-header-group | table-footer-group | table-row | table-column-group  ¥

| table-column | table-cell | table-caption | none | inherit

position : static | relative | absolute | fixed | inherit

top : | <length> | <percentage> | auto | inherit

right : | <length> | <percentage> | auto | inherit

bottom : | <length> | <percentage> | auto | inherit

left : | <length> | <percentage> | auto | inherit

float : left | right | none | inherit

clear : none | left | right | both | inherit

z-index : auto | <integer> | inherit

direction : ltr | rtl | inherit

unicode-bidi : normal | embed | bidi-override | inherit