Basic attribute
기본 속성 클래스입니다.
position
.position-relative
.position-absolute
.position-static
.position-fixed
position
.relative
.absolute
.static
.fixed
display
.display-block
.display-inline-block
.display-inline
.display-none
display
.block
.inline-block
.inline
.none
display-table
.display-table
.display-table-row
.display-table-cell
display-table
.table
.table-row
.table-cell
vertical-align
.vertical-align-top
.vertical-align-middle
.vertical-align-bottom
vertical-align
.top
.middle
.bottom