Codex
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Position ​

NameValue
position-offset-border-width-base-1px

Defined in src/codex-base.json

Refers to border-width.base

position-offset-input-radio--focus-0.25em

Defined in src/codex-components.json

Refers to dimension.25

Refers to unit.system

Background position ​

NameValue
background-position-basecenter

Defined in src/codex-base.json

Refers to background-position.100