How to Integrate a Calendar Into Your Form
If you’re looking to include a calendar on your form, don’t get frustrated if the CSS for the calendar seems to be missing or broken. We purposefully did not include a calendar because it’s not a feature in XHTML/CSS, and we don’t want to include any scripts that might interfere with another developer’s website.
But don’t worry – you can still use a calendar feature on your site
If you wish to have a calendar on your site, we recommend this open-source calendar: