A simple HTML, JS, PHP, and CSS message form with 3 required text inputs and 1
required select. The comment textarea has a 500 character limit.

JQuery is the only external libary used.. It doesn't need any installation; you only need to upload the files on a server. If you would like to modify the files, you can use any code editor.

Ready to use message form page for your website

The only requirement for the page to work is a working server compatible with PHP
scripts, as well as a text editor to modify the files. No installation required.

Download the files and put them inside the folder where the website html files are
located. No installation required.