Help with simple list sizing

Site URL: https://www.thecheekypineapple.com

Hello everyone,

I'm hoping someone will be able to tell me how to make the boxes in my "simple list" all the same size. I have them on my homepage for my services, but cant figure out how to make them all even. I've tried adjusting the content, but then I lose important information. If anyone could help me out, I'd really appreciate it.

Thanks! 
Concetta

That's worked beautifully, thank you so much!