message: Use functional color variables in Pagehead
diff: @@ -10,7 +10,7 @@ const Pagehead = styled.div<SystemCommonProps & SxProp>`
  padding-top: ${get('space.4')};
  padding-bottom: ${get('space.4')};
  margin-bottom: ${get('space.4')};
  - border-bottom: 1px solid ${get('colors.border.gray')};
  + border-bottom: 1px solid ${get('colors.input.border')};
  ${COMMON};
  ${sx};
  `
  