Why does Firefox always ruin my website on mobile devices?

[pmw]

Every other web browser displays my website properly. But Firefox always loads the desktop site which looks ridiculous. How do I fix this? 

[lintaglenn]

---

@pmw wrote:

Every other web browser displays my website properly. But Firefox always loads the desktop site which looks ridiculous. How do I fix this? 

---

Having the same issue! You can check https://actionandstuff.io/