I want to change my blog page width by 10 %

Hello TechieBraj,

Unfortunately, the theme does not have any such an option for this, sorry! Notice that we do not recommend to manually increase the theme width because you can easily break the theme layout, sorry! Another alternative for your would be to use a stretch ROW into your content, using the TD Composer on your page, like this ->
For more information about this our TD Composer, please check here -> https://forum.tagdiv.com/tagdiv-composer-tutorial/ -> https://www.screencast.com/t/tiPS2ebUfO

Hope this helps!

Thanks for your understanding!