How to remove categories , search and archives

Hi,
Can you tell me how to remove the categories , search and archives headings totally. As seen here: http://www.carpetcleanerdoncaster.com/upholstery-cleaner-doncaster/

Many thanks

Paul

 

Hello,

Go to the
Appearance > Widgets
Drag widgets and drop them in the Primary and Secondary widget area, It will automatically display at your sidebar.

 

Hi,
Thanks for your reply.
I actually want to remove these things from the web site., not add them.

Thanks,
Paul.

 

Hello,

Go to Pages > All pages and click on edit option of the desired page and select Fullwidth page for your page from Page Attribute section.

Sending image for reference

 

Thank you