I dont know if you have tested your shortcodes or not, but you code shortcodes only work fpr plain text. e.g.
[code_block_line_numbers]
code line 1.
code line 2.
code line 3.
[/code_block_line_numbers]
But if you actually put any real code there, nothing actually shows up beside the lined design. If you dont believe, try testing this – http://snippi.com/s/t4zo8x3
it looks like the styles in the file https://isaumya-wphostingspot.netdna-ssl.com/wp-content/cache/autoptimize/1/css/autoptimize_8d86c61d5dcdb0e6b5d3ebd0c7eaf27e.css overrides theme default styles. You can add this custom css code to make code styles look as default;
There is another issue with your theme. Tough I dont know why it is happening. As I use cdn on my site and use wp super cache for enabling my cdn, all the images that are added by using your shortcodes like image, slider etc are not getting a cdn based url, instead showing the normal url.
I’ve already mentioned this issue to stackexchange but no one is able to help till now. May be you can.