How to show raw codes like html css javascript in blogspot or website

You can not separate water in water.To separate you need to make some water in to ice that you want to separate.thats it.

To show web development codes like html ,CSS ,Javascript in webpages is not possible simply.As this codes are used to make this webpage.

To show html ,javascript ,CSS in webpages html entites must be encoded.Well you don't need to do this manually.There is website to do this.

Encode html entities to show html css in website ,Blogspot

Go to centricle.com to encode or decode html entities

Go to this website centricle.com.
Paste the code-html,CSS
Press encode button.
Done.