message: update Button background color & radius
diff: @@ -6,8 +6,7 @@ export default css`
  display: inline-block;
  padding: 6px 16px;
  color: ${get('colors.gray.9')};
  - background-color: ${get('colors.gray.1')};
  - background-image: linear-gradient(-180deg, ${get('colors.gray.0')} 0%, ${get('colors.button.bg2')} 90%);
  + background-color: ${get('colors.gray.0')};
  font-size: ${get('fontSizes.1')};
  font-weight: ${get('fontWeights.bold')};
  line-height: 20px;
  @@ -15,11 +14,8 @@ export default css`
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  - background-repeat: repeat-x;
  - background-position: -1px -1px;
  - background-size: 110% 110%;
  border: 1px solid ${get('colors.button.border')};
  - border-radius: ${get('radii.1')};
  + border-radius: ${get('radii.2')};
  appearance: none;
  text-decoration: none;
  