Hi jupagose
The blog page in JoomlArt website is an internal project, I can't share this unfortunately. If you're familiar with code, you can override the category view of com_content, the base file of T4 framework locate in this directory:
/plugins/system/t4/themes/base/html/com_content/category/
To override this, you can copy + customize in template folder like this:
This will require customization in PHP code + CSS, it will take time so I'm afraid that it's out of our support scope unfortunately. You can hire a developer to get it done for you.