My learning progress

HTML

This is the building blocks of my website i find this to be easy enough its just going div.container or span.cotainer or sometimes theres a form which my have inputs

CSS

This is also not too bad at least to get something to happen. To get exactly what you want is hard however.

The problem for me when it comes to CSS is how hard it can be to get something simple eg: A simple centered line of text or an image inside a div container. This surely is the blocks anyone needs to make a website.... in order to make just this simple text/image centered inside the box you need to run this rather tendious and long winded CSS code;

  #selector { 
  display: flex;
  justify-content: center;
  align-items: center;

}

I guess this is where a Framework like bulma or bootstrap can come in and help. But how many people use these and will these framworks be free and translatable/transposable for my future projects?