Interface

accent-color, caret-color, field-sizing and cursor on a formHTMLLive
<style>
  body { font: 15px system-ui; margin: 8px; accent-color: #2e7d32; }
  textarea { field-sizing: content; caret-color: #ef6c00; }  button { cursor: not-allowed; }
</style>
<label><input type="checkbox" checked> Subscribe</label> <input type="range" value="70">
<progress value="0.4"></progress><br><textarea>This textarea grows
as you type.</textarea> <button disabled>Send</button>
Browser output of Listing 4.42
Browser output of 42