Rainbow layouts to help track the positioning of the different html elements.
(How to use Rainbow layouts)
One option for a "Contact Us" page is to use a form to send an email to yourself.
Using only HTML can work, but only with certain browsers and if the browser settings are set to allow this to happen.
A method that will always work is to have PHP do the delivering of the email for you. To test this, you will need to upload the files to your server which has PHP installed or XAMPP localhost.