Maybe you can make the c-sharpcorner website code validate.
The page I am posting right now has 200+ errors.
You can just reduce the number of errors by using the syntax right. I thought you were programmers here and that you stick to the syntax but I seem to be wrong.
example:
<br> should be <br />
& should be &
etc...
Design should be done with CSS.
Maybe you can install some tools from www.mowl.be/downloads they are frequently used by webdevs.
Install that HTML VALIDATOR and make this website validate!