My heroku website looks empty and no html files are rendering

I was trying to deploy my django website to heroku. Basically I have done everything step by step and no errors in deploying as well. But there is nothing in my webpage just a side panel is showing nothing else. No navigation bars, no buttons, no html renderings ... nothing. But when I viewed the source code the html codes are there. I can access different urls as well but nothing renders in the webpage its weird really. The website works perfectly in localhost but not in heroku. I need a fix for this, thanks. Here is how the webpage looks right now, enter image description here