following up from all the html linting errors i was getting with the new build system (see https://github.com/twbs/bootstrap/pull/22477#issuecomment-296172499)
- fixes broken code indentation (and that was a joy to do...urgh)
- remove incorrect
<label>
, change the static text approach and explainer to encourage use ofreadonly
inputs instead of meaningless paragraphs - removes mention of
cursor:not-allowed
which was removed in https://github.com/twbs/bootstrap/pull/22403 - removes unnecessary vendor prefixes for
box-sizing
code sample (which also fixes the indentation linting error)