What does validating a web page mean
When you request a HTTPS connection to a webpage, the website will initially send its SSL certificate to your browser.
yet you don't need to drop so far behind the leading edge that your pages no longer look good.
When a trusted SSL Digital Certificate is used during a HTTPS connection, users will see a padlock icon in the browser address bar.
When an Extended Validation Certificate is installed on a web site, the address bar will turn green.
In the case of a website, the private key remains securely ensconced on the web server.
Conversely, the public key is intended to be distributed to anybody and everybody that needs to be able to decrypt information that was encrypted with the private key.