message: fix textarea width
diff: @@ -23,7 +23,7 @@ const TextareaInner = styled.textarea((props: ThemeProps<EditorTheming>) => ({
  resize: 'none',
  outline: 'none',
  minHeight: '100px',
  - width: 'calc(75% - 20px)',
  + width: '75%',
  '&:focus': {
  border: `2px solid ${props.theme.highlightColor}`
  }
  