I see a lot of designers and developers jumping ship to frameworks and that is commendable because it makes life easier can sometimes be better than hand written code. For dinosaurs like myself I like to write code. Now CSS isn’t technically code so my horse is not that high. What I really mean is that when you talk about technology hands on experience is essential and that means the stuff out front as well. Even though frameworks are dominating developers and designers should be able to write code. It’s easy to just use Bootstrap, I do but I love using Flexbox as one of my layout tools. It makes me a less stressed out and less of a swear word sayer.