Here is the HTML Page Code
You can change the design of the HTML page since I am not providing you the CSS code of my page so you need to redesign it.
This is the PHP Code. You need to create a file and name it as "sendmail.php" and paste the PHP code.
Then create another page "contact.html" and paste the HTML code there. It will for the web server but if you need to run it on localhost then you need to configure your SMTP server.
Thanks. Any further suggestions by you are welcomed in the comments.