Shopify bin background css problem

I have tried to change the background colour of the bin-button but whenever I change it all the buttons on my website change colour. How do I only change the background colour of the bin-button?

https://preview.redd.it/z1k1kzfqz0pf1.png?width=1286&format=png&auto=webp&s=c78e399dc5429c0cea5ef2de826af72655fdeb04